Re: [PATCH v2 2/4] ARC: ARCv2: support loop buffer (LPB) disabling

2020-06-18 Thread Eugeniy Paltsev
Hi Vineet, could you also peek this patch to for-curr as we don't have any disagreement about it? I'll respin the rest of the patches later. Thanks. --- Eugeniy Paltsev From: Eugeniy Paltsev Sent: Thursday, June 4, 2020 20:39 To: linux-snps-arc

[PATCH v2 2/4] ARC: ARCv2: support loop buffer (LPB) disabling

2020-06-04 Thread Eugeniy Paltsev
On HS cores, loop buffer (LPB) is programmable in runtime and can be optionally disabled. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 6 ++ arch/arc/kernel/head.S | 8 2 files changed, 14 insertions(+) diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index

[PATCH v2 0/4] ARC: [plat-hsdk-4xd] initial port for HSDK-4xD board

2020-06-04 Thread Eugeniy Paltsev
SDK doesn't have LPB so disabling will be skipped by BCR check in runtime. * Add missing HSDK-4xD device tree bindings. Convert HSDK device tree bindings to json-schema. Eugeniy Paltsev (4): ARC: allow to override default mcpu compiler flag ARC: ARCv2: support loop buffer (LPB) disabling

[PATCH v2 1/4] ARC: allow to override default mcpu compiler flag

2020-06-04 Thread Eugeniy Paltsev
Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 9 + arch/arc/Makefile | 21 +++-- 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index ff306246d0f8..7034c217708f 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig

[PATCH v2 4/4] ARC: [plat-hsdk*] document HSDK-4xD board/SoC bindings

2020-06-04 Thread Eugeniy Paltsev
Add documentation for HSDK-4xD board/SoC bindings. While I'm at it convert HSDK board/SoC bindings to DT schema format using json-schema. Cc: Rob Herring Signed-off-by: Eugeniy Paltsev --- .../devicetree/bindings/arc/hsdk.txt | 7 - .../devicetree/bindings/arc/hsdk.yaml

[PATCH v2 3/4] ARC: [plat-hsdk-4xd] initial port for HSDK-4xD board

2020-06-04 Thread Eugeniy Paltsev
Linux kernel verification flow, patches for run in simulation, etc...), so I'd prefer to keep HSDK DTS untouched. That's why HSDK-4xD DTS is created as an separate file. Cc: Rob Herring Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/hsdk-4xd.dts | 322 arch

Re: [PATCH private 1/3] ARC: allow to overwrite default mcpu compiler flag

2020-05-29 Thread Eugeniy Paltsev
Oooops, this one is duplicate and should be dropped. --- Eugeniy Paltsev From: Eugeniy Paltsev Sent: Friday, May 29, 2020 14:55 To: linux-snps-arc@lists.infradead.org; Vineet Gupta Cc: linux-ker...@vger.kernel.org; Alexey Brodkin; Eugeniy Paltsev

[PATCH 1/3] ARC: allow to overide default mcpu compiler flag

2020-05-29 Thread Eugeniy Paltsev
-4xD board support. In addition it also allows to awoid patching 'mcpu' in ARC Makefile when we building Linux for some non-standard simulation or FPGA-based platforms. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 7 +++ arch/arc/Makefile | 4 2 files changed, 11 insertions

[PATCH 0/3] ARC: [plat-hsdk-4xd] initial port for HSDK-4xD board

2020-05-29 Thread Eugeniy Paltsev
Eugeniy Paltsev (3): ARC: allow to overide default mcpu compiler flag ARC: ARCv2: support loop buffer (LPB) disabling ARC: [plat-hsdk-4xd] initial port for HSDK-4xD board arch/arc/Kconfig| 13 ++ arch/arc/Makefile | 4 + arch/arc/boot/dts/hsdk

[PATCH private 1/3] ARC: allow to overwrite default mcpu compiler flag

2020-05-29 Thread Eugeniy Paltsev
-4xD board support. In addition it also allows to awoid patching 'mcpu' in ARC Makefile when we building Linux for some non-standard simulation or FPGA-based platforms. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 7 +++ arch/arc/Makefile | 4 2 files changed, 11 insertions

[PATCH 2/3] ARC: ARCv2: support loop buffer (LPB) disabling

2020-05-29 Thread Eugeniy Paltsev
On HS cores, loop buffer (LPB) is programmable in runtime and can be optionally disabled. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 6 ++ arch/arc/kernel/head.S | 8 2 files changed, 14 insertions(+) diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index

[PATCH 3/3] ARC: [plat-hsdk-4xd] initial port for HSDK-4xD board

2020-05-29 Thread Eugeniy Paltsev
in out verification flow, patches for run in simulation, etc...), so I'd prefer to keep HSDK DTS untouched. That's why HSDK-4xD DTS is created as an separate file. Cc: Rob Herring Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/hsdk-4xd.dts | 322 arch/arc

Re: [PATCH 53/59] drm/arc: Move to drm/tiny

2020-05-25 Thread Eugeniy Paltsev
HDMI bridge. Probably you have some ideas about how to fix it? Thanks. > From: Daniel Vetter > Sent: Monday, May 25, 2020 20:26 > To: Eugeniy Paltsev > Cc: dri-devel > Subject: Re: [PATCH 53/59] drm/arc: Move to drm/tiny > > On Mon, May 25, 2020 at 6:36 PM Eugeniy Pa

Re: [RFC] ARC: initial ftrace support

2020-05-14 Thread Eugeniy Paltsev
stedt; Ingo Molnar; >linux-snps-arc@lists.infradead.org; Eugeniy Paltsev; Vineet Gupta >Subject: RE: [RFC] ARC: initial ftrace support > > Hi Claus, > >> -Original Message- >> From: linux-snps-arc On Behalf >> Of Claudiu Zissulescu >> Ianculescu >

Re: [PATCH] ARC: guard dsp early init against non ARCv2

2020-04-29 Thread Eugeniy Paltsev
Hi Vineet, > From: Vineet Gupta > Sent: Tuesday, April 28, 2020 22:46 > To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org > Cc: Alexey Brodkin; linux-ker...@vger.kernel.org > Subject: Re: [PATCH] ARC: guard dsp early init against non ARCv2 > > On 4/28/20 11:50 AM,

[PATCH] ARC: guard dsp early init against non ARCv2

2020-04-28 Thread Eugeniy Paltsev
. Signed-off-by: Eugeniy Paltsev --- arch/arc/include/asm/dsp-impl.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arc/include/asm/dsp-impl.h b/arch/arc/include/asm/dsp-impl.h index e1aa212ca6eb..e64d945ae7df 100644 --- a/arch/arc/include/asm/dsp-impl.h +++ b/arch/arc/include/asm/dsp

Re: [PATCH] CMD: random: fix return code

2020-04-24 Thread Eugeniy Paltsev
Hi Simon, Tom, I guess it's perfect time to apply this patch. Thanks! --- Eugeniy Paltsev From: Simon Glass Sent: Monday, March 23, 2020 18:37 To: Eugeniy Paltsev Cc: Tom Rini; U-Boot Mailing List; uboot-snps-...@synopsys.com; Alexey Brodkin; linux

[PATCH v3 0/2] DRM: ARC: add HDMI 2.0 TX encoder support

2020-04-14 Thread Eugeniy Paltsev
w-hdmi-hsdk" Now DT binding file is snps,arc-dw-hdmi.yaml and compatible is "snps,arc-dw-hdmi-" * Minor fixes Eugeniy Paltsev (2): DRM: ARC: add HDMI 2.0 TX encoder support dt-bindings: Document the Synopsys ARC HDMI TX bindings .../display/bridge/snps,a

[PATCH v3 2/2] dt-bindings: Document the Synopsys ARC HDMI TX bindings

2020-04-14 Thread Eugeniy Paltsev
This patch adds documentation of device tree bindings for the Synopsys HDMI 2.0 TX encoder driver for ARC SoCs. Acked-by: Sam Ravnborg Signed-off-by: Eugeniy Paltsev --- .../display/bridge/snps,arc-dw-hdmi.yaml | 136 ++ 1 file changed, 136 insertions(+) create mode

[PATCH v3 1/2] DRM: ARC: add HDMI 2.0 TX encoder support

2020-04-14 Thread Eugeniy Paltsev
The Synopsys ARC SoCs (like HSDK4xD) include on-chip DesignWare HDMI encoders. Support them with a platform driver to provide platform glue data to the dw-hdmi driver. Acked-by: Sam Ravnborg Signed-off-by: Eugeniy Paltsev --- MAINTAINERS | 6 ++ drivers/gpu/drm/Makefile

[PATCH v2 0/2] DRM: ARC: add HDMI 2.0 TX encoder support

2020-04-14 Thread Eugeniy Paltsev
Changes v1->v2: * use DT Schema format please (.yaml files) for DT bindings Eugeniy Paltsev (2): DRM: ARC: add HDMI 2.0 TX encoder support dt-bindings: Document the Synopsys ARC HDMI TX bindings .../display/bridge/snps,arc-dw-hdmi.yaml | 131 ++ MAINTAIN

[PATCH v2 1/2] DRM: ARC: add HDMI 2.0 TX encoder support

2020-04-14 Thread Eugeniy Paltsev
The Synopsys ARC SoCs (like HSDK4xD) include on-chip DesignWare HDMI encoders. Support them with a platform driver to provide platform glue data to the dw-hdmi driver. Signed-off-by: Eugeniy Paltsev --- MAINTAINERS | 6 ++ drivers/gpu/drm/Makefile | 2

[PATCH v2 2/2] dt-bindings: Document the Synopsys ARC HDMI TX bindings

2020-04-14 Thread Eugeniy Paltsev
This patch adds documentation of device tree bindings for the Synopsys HDMI 2.0 TX encoder driver for ARC SoCs. Signed-off-by: Eugeniy Paltsev --- .../display/bridge/snps,arc-dw-hdmi.yaml | 131 ++ 1 file changed, 131 insertions(+) create mode 100644 Documentation

[PATCH v2] ARC: [plat-hsdk]: fix USB regression

2020-04-07 Thread Eugeniy Paltsev
so UDL now depends on CONFIG_USB and not selects it. This introduces regression for ARC HSDK board as HSDK defconfig wasn't adjusted and now it misses USB support due to lack of CONFIG_USB enabled. Fix that. Cc: # 5.6.x Fixes: 5d50bd440bc2 ("drm/udl: Make udl driver depend on CONFIG_USB") Si

Re: [PATCH] ARC: [plat-hsdk]: fix USB regression

2020-04-07 Thread Eugeniy Paltsev
Hi Masahiro, I'm wondering what is proper way to deal with such type of regressions? Is is responsibility of person who change kconfig to check (and possibly adjust) affected defconfigs? A question for you as a kconfig expert :) --- Eugeniy Paltsev

[PATCH] ARC: [plat-hsdk]: fix USB regression

2020-04-07 Thread Eugeniy Paltsev
so UDL now depends on CONFIG_USB and not selects it. This introduces regression for ARC HSDK board as HSDK defconfig wasn't adjusted and now it misses USB support due to lack of CONFIG_USB enabled. Fix that. Fixes: 5d50bd440bc2 ("drm/udl: Make udl driver depend on CONFIG_USB") Signed-off

[PATCH] ARC: Fix ICCM & DCCM runtime size checks

2020-04-02 Thread Eugeniy Paltsev
Greco Signed-off-by: Eugeniy Paltsev --- arch/arc/kernel/setup.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index aa41af6ef4ac..efdedf83b954 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -11,6

[RFC] ARC: initial ftrace support

2020-03-27 Thread Eugeniy Paltsev
Add initial ftrace support for ARCv2. We add support only for function tracer (the simplest, not dynamic one), however it is prerequisite for dynamic function tracer and other complex ones. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 1 + arch/arc/include/asm/Kbuild

[PATCH] CMD: random: fix return code

2020-03-20 Thread Eugeniy Paltsev
As of today 'random' command return 1 (CMD_RET_FAILURE) in case of successful execution and 0 (CMD_RET_SUCCESS) in case of bad arguments. Fix that. NOTE: we remove printing usage information from command body so it won't print twice. Signed-off-by: Eugeniy Paltsev --- cmd/mem.c | 9

[PATCH 2/2] dt-bindings: Document the Synopsys ARC HDMI TX bindings

2020-03-16 Thread Eugeniy Paltsev
This patch adds documentation of device tree bindings for the Synopsys HDMI 2.0 TX encoder driver for ARC SoCs. Signed-off-by: Eugeniy Paltsev --- .../display/bridge/snps,arc-dw-hdmi.txt | 73 +++ 1 file changed, 73 insertions(+) create mode 100644 Documentation

[PATCH 1/2] DRM: ARC: add HDMI 2.0 TX encoder support

2020-03-16 Thread Eugeniy Paltsev
The Synopsys ARC SoCs (like HSDK4xD) include on-chip DesignWare HDMI encoders. Support them with a platform driver to provide platform glue data to the dw-hdmi driver. Signed-off-by: Eugeniy Paltsev --- MAINTAINERS | 6 ++ drivers/gpu/drm/Makefile | 2

[PATCH 0/2] DRM: ARC: add HDMI 2.0 TX encoder support

2020-03-16 Thread Eugeniy Paltsev
Eugeniy Paltsev (2): DRM: ARC: add HDMI 2.0 TX encoder support dt-bindings: Document the Synopsys ARC HDMI TX bindings .../display/bridge/snps,arc-dw-hdmi.txt | 73 ++ MAINTAINERS | 6 + drivers/gpu/drm/Makefile | 2

[PATCH v2] initramfs: restore default compression behavior

2020-03-16 Thread Eugeniy Paltsev
e list. In that case it will be chosen only if all other options (which implements any compression) are not available. Signed-off-by: Eugeniy Paltsev --- usr/Kconfig | 22 +++--- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/usr/Kconfig b/usr/Kconfig index bdf5bbd40727.

Re: [PATCH] initramfs: restore default compression behaviour

2020-03-16 Thread Eugeniy Paltsev
Hi Masahiro, >From: Masahiro Yamada >Sent: Wednesday, March 11, 2020 23:12 >To: Eugeniy Paltsev >Cc: Linux Kernel Mailing List; arcml; Vineet Gupta; Alexey Brodkin >Subject: Re: [PATCH] initramfs: restore default compression behaviour > >Hi Eugeniy. > >On Wed, Mar

Re: [PATCH 2/2] ARC: don't align ret_from_exception function

2020-03-11 Thread Eugeniy Paltsev
>From: Vineet Gupta >Sent: Thursday, March 12, 2020 00:10 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: linux-ker...@vger.kernel.org; Alexey Brodkin >Subject: Re: [PATCH 2/2] ARC: don't align ret_from_exception function > >On 3/11/20 1:58 PM, Eugeniy Paltsev w

Re: [PATCH 2/2] ARC: don't align ret_from_exception function

2020-03-11 Thread Eugeniy Paltsev
>From: Vineet Gupta >Sent: Wednesday, March 11, 2020 20:38 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: linux-ker...@vger.kernel.org; Alexey Brodkin >Subject: Re: [PATCH 2/2] ARC: don't align ret_from_exception function > >On 3/11/20 9:26 AM, Eugeniy Palts

[PATCH 1/2] ARC: define __ALIGN_STR and __ALIGN symbols for ARC

2020-03-11 Thread Eugeniy Paltsev
s to generated weird instructions in code (when alignment is used) like "ldh_s r12,[r0,0x20]" which is encoded as 0x9090 for ARCv2. Let's use ".align 4" which insert a "nop_s" instruction instead. Signed-off-by: Eugeniy Paltsev --- arch/arc/include/asm/linkage.h | 2 ++

[PATCH 2/2] ARC: don't align ret_from_exception function

2020-03-11 Thread Eugeniy Paltsev
may align "ret_from_exception" by 4 bytes by adding padding before it. "ret_from_exception" doesn't require alignment by 4 bytes (as it doesn't go to vector table, etc...) so let's avoid aligning it by switch from ENTRY (which is alias for SYM_FUNC_START) to SYM_FUNC_START_NOALIGN macro.

[PATCH] ARC: [plat-axs10x]: PGU: remove unused encoder-slave property

2020-03-11 Thread Eugeniy Paltsev
ARC PGU is looking for encoder via endpoint mechanism and doesn't use "encoder-slave" property for a long time. Let's drop unused "encoder-slave" property from ARC PGU node in axs10x. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/axs10x_mb.dtsi | 1 - 1 file changed,

[PATCH 2/3] CLK: HSDK: CGU: support PLL bypassing

2020-03-11 Thread Eugeniy Paltsev
Support setting PLL to bypass mode to support output frequency equal to input one. Signed-off-by: Eugeniy Paltsev --- drivers/clk/clk-hsdk-pll.c | 61 +- 1 file changed, 34 insertions(+), 27 deletions(-) diff --git a/drivers/clk/clk-hsdk-pll.c b/drivers/clk

[PATCH 3/3] CLK: HSDK: CGU: add support for 148.5MHz clock

2020-03-11 Thread Eugeniy Paltsev
Add support for 148.5MHz clock for HDMI PLL Signed-off-by: Eugeniy Paltsev --- drivers/clk/clk-hsdk-pll.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/clk-hsdk-pll.c b/drivers/clk/clk-hsdk-pll.c index 0ea7af57a5b1..b4f8852201cb 100644 --- a/drivers/clk/clk-hsdk-pll.c +++ b

[PATCH 0/3] CLK: HSDK: CGU: updates for HSDK clock management

2020-03-11 Thread Eugeniy Paltsev
Bunch of updates for HSDK clock generation unit (CGU) driver. Eugeniy Paltsev (3): CLK: HSDK: CGU: check if PLL is bypassed first CLK: HSDK: CGU: support PLL bypassing CLK: HSDK: CGU: add support for 148.5MHz clock drivers/clk/clk-hsdk-pll.c | 70 +- 1

[PATCH 1/3] CLK: HSDK: CGU: check if PLL is bypassed first

2020-03-11 Thread Eugeniy Paltsev
If PLL is bypassed the EN (enable) bit has no effect on output clock. Signed-off-by: Eugeniy Paltsev --- drivers/clk/clk-hsdk-pll.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/clk/clk-hsdk-pll.c b/drivers/clk/clk-hsdk-pll.c index 97d1e8c35b71

[PATCH] DRM: ARC: PGU: interlaced mode not supported

2020-03-11 Thread Eugeniy Paltsev
Filter out interlaced modes as they are not supported by ARC PGU hardware. Signed-off-by: Eugeniy Paltsev --- drivers/gpu/drm/arc/arcpgu_crtc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c index 8ae1e1f97a73

[PATCH] ARC: HSDK: Enable on-chip reset controller

2020-03-11 Thread Eugeniy Paltsev
As the driver of on-chip reset controller became available we are ready to enable it. Signed-off-by: Eugeniy Paltsev --- arch/arc/dts/hsdk.dts | 7 +++ configs/hsdk_defconfig | 1 + 2 files changed, 8 insertions(+) diff --git a/arch/arc/dts/hsdk.dts b/arch/arc/dts/hsdk.dts index

[PATCH 2/2] ARC: CACHE: mark IOC helper functions as inlined_cachefunc

2020-03-11 Thread Eugeniy Paltsev
Force inlining of IOC related functions used in other cache functions. This is preventive change. Signed-off-by: Eugeniy Paltsev --- arch/arc/lib/cache.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arc/lib/cache.c b/arch/arc/lib/cache.c index c42723daeb2

[PATCH 1/2] ARC: CACHE: add support for SL$ disable

2020-03-11 Thread Eugeniy Paltsev
Since version 3.0 ARC HS supports SL$ (L2 system level cache) disable. So add support for SL$ disable/enable to code. Signed-off-by: Eugeniy Paltsev --- arch/arc/include/asm/cache.h | 7 +++ arch/arc/lib/cache.c | 114 --- 2 files changed, 114

[PATCH 0/2] ARC cache subsystem updates

2020-03-11 Thread Eugeniy Paltsev
Eugeniy Paltsev (2): ARC: CACHE: add support for SL$ disable ARC: CACHE: mark IOC helper functions as inlined_cachefunc arch/arc/include/asm/cache.h | 7 +++ arch/arc/lib/cache.c | 118 --- 2 files changed, 116 insertions(+), 9 deletions

[PATCH] initramfs: restore default compression behaviour

2020-03-11 Thread Eugeniy Paltsev
Signed-off-by: Eugeniy Paltsev --- usr/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/usr/Kconfig b/usr/Kconfig index bdf5bbd40727..690ef9020819 100644 --- a/usr/Kconfig +++ b/usr/Kconfig @@ -102,6 +102,7 @@ config RD_LZ4 choice prompt "Built-in initramfs c

Re: [PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-10 Thread Eugeniy Paltsev
>From: Vineet Gupta >Sent: Saturday, March 7, 2020 03:12 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: Alexey Brodkin; linux-ker...@vger.kernel.org >Subject: Re: [PATCH v2 2/4] ARC: handle DSP presence in HW > >On 3/5/20 12:02 PM, Eugeniy Paltsev wrote: >&g

Re: [PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-10 Thread Eugeniy Paltsev
>From: Vineet Gupta >Sent: Saturday, March 7, 2020 03:12 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: Alexey Brodkin; linux-ker...@vger.kernel.org >Subject: Re: [PATCH v2 2/4] ARC: handle DSP presence in HW > >On 3/5/20 12:02 PM, Eugeniy Paltsev wrote: >&g

[PATCH v2 0/4] ARC: handle DSP presence in HW

2020-03-05 Thread Eugeniy Paltsev
se of context switch * Don't define additional options in headers to not introduce explicit include dependencies * Mode DSP config check to DSP code itself * Minor fixes Eugeniy Paltsev (4): ARC: add helpers to sanitize config options ARC: handle DSP presence in HW ARC: add support fo

[PATCH v2 1/4] ARC: add helpers to sanitize config options

2020-03-05 Thread Eugeniy Paltsev
We'll use this macro in coming patches extensively. Signed-off-by: Eugeniy Paltsev --- arch/arc/include/asm/asserts.h | 24 arch/arc/kernel/setup.c| 25 - 2 files changed, 36 insertions(+), 13 deletions(-) create mode 100644 arch/arc

[PATCH v2 4/4] ARC: allow userspace DSP applications to use AGU extensions

2020-03-05 Thread Eugeniy Paltsev
To be able to run DSP-enabled userspace applications with AGU (address generation unit) extensions we additionally need to save and restore following registers at context switch: * AGU_AP* * AGU_OS* * AGU_MOD* Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig| 9

[PATCH v2 2/4] ARC: handle DSP presence in HW

2020-03-05 Thread Eugeniy Paltsev
regardless of DSP presence we need to set DSP_CTRL properly. However this register can be modified bu any usersace app therefore any usersace may break kernel execution. Fix that by configure DSP_CTRL in CPU early code and in IRQs entries. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig

[PATCH v2 3/4] ARC: add support for DSP-enabled userspace applications

2020-03-05 Thread Eugeniy Paltsev
, ACC0_GHI * DSP_BFLY0, DSP_FFT_CTRL Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 12 + arch/arc/include/asm/arcregs.h | 2 + arch/arc/include/asm/dsp-impl.h| 74 +- arch/arc/include/asm/dsp.h | 24 ++ arch/arc

Re: [PATCH 4/5] ARC: add support for DSP-enabled userspace applications

2020-03-04 Thread Eugeniy Paltsev
Hi Vineet, >From: Vineet Gupta >Sent: Tuesday, January 7, 2020 21:25 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: linux-ker...@vger.kernel.org; Alexey Brodkin >Subject: Re: [PATCH 4/5] ARC: add support for DSP-enabled userspace >applications >> +

[PATCH] ARC: rework setting of ARC CPU specific compiler options

2020-02-12 Thread Eugeniy Paltsev
ion. Given for each and every platform we end-up adding quite a few more flags it's logical to move "-mcpu" selection to platform's definition as well which we exactly do here. Signed-off-by: Eugeniy Paltsev --- arch/arc/config.mk | 20 board/ab

[PATCH 2/2] CLK: HSDK: fix HDMI clock calculation

2020-01-29 Thread Eugeniy Paltsev
HDMI PLL has its own xtal with 27 MHz output but we treat it the same way as other PLLs with 33.33 MHz input. Fix that. Signed-off-by: Eugeniy Paltsev --- drivers/clk/clk-hsdk-cgu.c | 31 +-- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/drivers/clk

[PATCH 1/2] CLK: HSDK: Check for PLL bypass firstly

2020-01-29 Thread Eugeniy Paltsev
Pll bypass has priority over enable/disable. Signed-off-by: Eugeniy Paltsev --- drivers/clk/clk-hsdk-cgu.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/clk/clk-hsdk-cgu.c b/drivers/clk/clk-hsdk-cgu.c index 56ef08c032b..69e6b24b66c 100644 --- a/drivers/clk

Re: [PATCH 3/5] ARC: handle DSP presence in HW

2020-01-10 Thread Eugeniy Paltsev
Hi Vineet, >From: Vineet Gupta >Sent: Tuesday, January 7, 2020 04:03 >To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org >Cc: linux-ker...@vger.kernel.org; Alexey Brodkin >Subject: Re: [PATCH 3/5] ARC: handle DSP presence in HW >[snip] >> +static in

Re: [PATCH 4/5] ARC: add support for DSP-enabled userspace applications

2020-01-09 Thread Eugeniy Paltsev
Hi Vineet, >From: Vineet Gupta >On 12/27/19 10:03 AM, Eugeniy Paltsev wrote: >> To be able to run DSP-enabled userspace applications we need to >> save and restore following DSP-related registers: >> At IRQ/exception entry/exit: >> * ACC0_GLO, ACC0_GHI, DSP_C

[PATCH 5/5] ARC: allow userspace DSP applications to use AGU extensions

2019-12-27 Thread Eugeniy Paltsev
To be able to run DSP-enabled userspace applications with AGU (address generation unit) extensions we additionally need to save and restore following registers at context switch: * AGU_AP* * AGU_OS* * AGU_MOD* Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig| 7

[RFC 0/5] ARC: handle DSP presence in HW

2019-12-27 Thread Eugeniy Paltsev
Arc processors may have DSP extension which is optional. In this patch series we: * Handle issues caused by DSP extension presence in HW * Add optional support for DSP-enabled applications in userspace (with optional AGU extension support) * Do minor cleanups Eugeniy Paltsev (5): ARC: pt_regs

[PATCH 4/5] ARC: add support for DSP-enabled userspace applications

2019-12-27 Thread Eugeniy Paltsev
-by: Eugeniy Paltsev --- arch/arc/Kconfig | 7 +++ arch/arc/include/asm/arcregs.h | 2 + arch/arc/include/asm/dsp-impl.h| 75 +- arch/arc/include/asm/dsp.h | 42 + arch/arc/include/asm/entry-arcv2.h | 3 ++ arch/arc/include

[PATCH 3/5] ARC: handle DSP presence in HW

2019-12-27 Thread Eugeniy Paltsev
regardless of DSP presence we need to set DSP_CTRL properly. However this register can be modified bu any usersace app therefore any usersace may break kernel execution. Fix that by configure DSP_CTRL in CPU early code and in IRQs entries. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig

[PATCH 2/5] ARC: add helpers to sanitize config options

2019-12-27 Thread Eugeniy Paltsev
We'll use this macro in coming patches extensively. Signed-off-by: Eugeniy Paltsev --- arch/arc/kernel/setup.c | 29 - 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 7ee89dc61f6e..edb55b6ee278

[PATCH 1/5] ARC: pt_regs: remove hardcoded registers offset

2019-12-27 Thread Eugeniy Paltsev
Replace hardcoded registers offset numbers by calculated via offsetof. Signed-off-by: Eugeniy Paltsev --- arch/arc/include/asm/entry-arcv2.h | 8 arch/arc/kernel/asm-offsets.c | 9 + 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/arch/arc/include/asm/entry

Re: [RFC/RFT WIP PATCH] arc: add sparsemem support

2019-12-19 Thread Eugeniy Paltsev
ebase you patches on v5.5 kernel (or newer) please also read this note: https://github.com/foss-for-synopsys-dwc-arc-processors/linux/wiki/How-to-run-ARC-Linux-kernel-and-debug-(with-MetaWare-Debugger)#v55-linux-kernel-note Thanks. --- Eugeniy Paltsev ___

[PATCH] ARC: asm-offsets: remove duplicate entry

2019-12-19 Thread Eugeniy Paltsev
We define 'PT_user_r25' twice in asm-offsets.c It's not a big issue as we define it to the same value, however let's fix it. Signed-off-by: Eugeniy Paltsev --- arch/arc/kernel/asm-offsets.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arc/kernel/asm-offsets.c b/arch/arc/kernel/asm

[PATCH v2 1/2] ARC: [plat-axs10x]: use pgu pll instead of fixed clock

2019-11-20 Thread Eugeniy Paltsev
Use PLL driver instead of fixed-clock for PGU pixel clock. That allows us to support wider range of graphic modes. Signed-off-by: Eugeniy Paltsev --- Changes v1->v2: * add missing input_clk node to AXS101. No changes for AXS103 / AXS103 SMP. arch/arc/boot/dts/axc001.dtsi|

[PATCH v2 2/2] ARC: [plat-axs10x]: remove hardcoded video mode from bootargs

2019-11-20 Thread Eugeniy Paltsev
Now have pixel clock PLL driver and we can change pixel clock rate so we don't need to enforce one exact video mode. Moreover enforcing video mode is harmful in case of we enforce mode which isn't supported by the monitor we are using. Signed-off-by: Eugeniy Paltsev --- Changes v1->v2: * N

[PATCH] ARC: add kmemleak support

2019-11-19 Thread Eugeniy Paltsev
kmemleak is used internally for a long time and as there isn't any issue with it we can finally enable it in upstream. Signed-off-by: Eugeniy Paltsev --- arch/arc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8383155c8c82..c147ebe51b65

[PATCH 4/4] DRM: ARC: PGU: add ARGB8888 format to supported format list

2019-11-19 Thread Eugeniy Paltsev
As we ignore first 8 bit of 32 bit pixel value we can add ARGB format as alias of XRGB. Signed-off-by: Eugeniy Paltsev --- drivers/gpu/drm/arc/arcpgu_crtc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c index

[PATCH 3/4] DRM: ARC: PGU: replace unsupported by HW RGB888 format by XRGB888

2019-11-19 Thread Eugeniy Paltsev
ARC PGU doesn't support RGB888 (24 bit) format but supports XRGB888 (32 bit) format. Fix incorrect format list in a driver. Signed-off-by: Eugeniy Paltsev --- drivers/gpu/drm/arc/arcpgu_crtc.c | 6 +++--- drivers/gpu/drm/arc/arcpgu_regs.h | 2 +- 2 files changed, 4 insertions(+), 4 deletions

[PATCH 0/4] DRM: PGU: ARC: fixies related to framebuffer format

2019-11-19 Thread Eugeniy Paltsev
Eugeniy Paltsev (4): DRM: ARC: PGU: fix framebuffer format switching DRM: ARC: PGU: cleanup supported format list code DRM: ARC: PGU: replace unsupported by HW RGB888 format by XRGB888 DRM: ARC: PGU: add ARGB format to supported format list drivers/gpu/drm/arc/arcpgu_crtc.c | 36

[PATCH 1/4] DRM: ARC: PGU: fix framebuffer format switching

2019-11-19 Thread Eugeniy Paltsev
Current implementation don't switch to RGB565 format if BGR888 was previously used. Fix that. Signed-off-by: Eugeniy Paltsev --- drivers/gpu/drm/arc/arcpgu_crtc.c | 12 +++- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu

[PATCH 2/8] ARC: HAPS: cleanup defconfigs from unused IO-related options

2019-10-23 Thread Eugeniy Paltsev
We don't have any peripherals on HAPS which may require FB or input_devices support. So get rid of them. Signed-off-by: Eugeniy Paltsev --- arch/arc/configs/haps_hs_defconfig | 9 +++-- arch/arc/configs/haps_hs_smp_defconfig | 9 +++-- 2 files changed, 6 insertions(+), 12 deletions

[PATCH 0/8] ARC: merge HAPS-HS with nSIM-HS configs

2019-10-23 Thread Eugeniy Paltsev
e the haps defconfig instead of nSIM one * switch nsim_700 to dwuart Eugeniy Paltsev (8): ARC: regenerate nSIM and HAPS defconfigs ARC: HAPS: cleanup defconfigs from unused IO-related options ARC: HAPS: use same UART configuration everywhere ARC: HAPS: add HIGHMEM memory zone to DTS ARC: HAPS:

[PATCH 1/8] ARC: regenerate nSIM and HAPS defconfigs

2019-10-23 Thread Eugeniy Paltsev
No functional change intended. Signed-off-by: Eugeniy Paltsev --- arch/arc/configs/haps_hs_defconfig | 10 ++ arch/arc/configs/haps_hs_smp_defconfig | 12 +++- arch/arc/configs/nsim_700_defconfig| 7 ++- arch/arc/configs/nsim_hs_defconfig | 8 ++-- arch/arc

[PATCH 7/8] ARC: nSIM_700: switch to DW UART usage

2019-10-23 Thread Eugeniy Paltsev
Switch nsim_700_defconfig to dwuart for consistent uart settings for all nSIM configurations. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/nsim_700.dts | 20 +++- arch/arc/configs/nsim_700_defconfig | 8 ++-- 2 files changed, 17 insertions(+), 11 deletions

[PATCH 6/8] ARC: merge HAPS-HS with nSIM-HS configs

2019-10-23 Thread Eugeniy Paltsev
of previously used "-prop=nsim_mem-dev=uart0,base=0xc0fc1000" "use_connect" and "irq" values of UART property remains untouched. Signed-off-by: Eugeniy Paltsev --- arch/arc/Makefile | 2 +- arch/arc/boot/dts/nsim_hs.dts

[PATCH 8/8] ARC: nSIM_700: remove unused network options

2019-10-23 Thread Eugeniy Paltsev
We have snps,arc-emac enabled in nSIM_700. It's obsolete and it's not used anymore so remove its device tree node and disable unused network options in defconfig. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/nsim_700.dts | 16 arch/arc/configs/nsim_700_defconfig

[PATCH 5/8] ARC: HAPS: cleanup defconfigs from unused ETH drivers

2019-10-23 Thread Eugeniy Paltsev
We have multiple vendors ethernet drivers enabled in haps_hs and haps_hs_smp defconfig. The only one we possibly require is VIRTIO_NET. So disable unused ones via disabling entire CONFIG_ETHERNET which controls all vendor-specific ethernet drivers. Signed-off-by: Eugeniy Paltsev --- arch/arc

[PATCH 3/8] ARC: HAPS: use same UART configuration everywhere

2019-10-23 Thread Eugeniy Paltsev
For some reason we use ns8250 UART compatible on UP HAPS configuration and ns16550a (which is ns8250 with FIFO support) on SMP HAPS configuration. Given that we have same UART IP with same IP configuration on both HAPS configuration use ns16550a compatible everywhere. Signed-off-by: Eugeniy

[PATCH 4/8] ARC: HAPS: add HIGHMEM memory zone to DTS

2019-10-23 Thread Eugeniy Paltsev
This is required as a preparation of merging nSIM and HASP defonfig and device tree. As we have HIGHMEM disabled in both HAPS and nSIM defconfigs this doesn't lead to any functional change. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/haps_hs.dts | 13 - 1 file changed, 8

Re: [RFC 0/6] ARC: merge HAPS-HS with nSIM-HS configs

2019-10-22 Thread Eugeniy Paltsev
regression on pseudo-SMP only Any objections / thoughts? --- Eugeniy Paltsev From: Vineet Gupta Sent: Friday, October 18, 2019 21:48 To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org; Vineet Gupta Cc: Alexey Brodkin; linux-ker...@vger.kernel.org

[RFC 1/6] ARC: regenerate nSIM and HAPS defconfigs

2019-10-18 Thread Eugeniy Paltsev
No functional change intended. Signed-off-by: Eugeniy Paltsev --- arch/arc/configs/haps_hs_defconfig | 10 ++ arch/arc/configs/haps_hs_smp_defconfig | 12 +++- arch/arc/configs/nsim_hs_defconfig | 8 ++-- arch/arc/configs/nsim_hs_smp_defconfig | 10 +++--- 4

[RFC 4/6] ARC: HAPS: add HIGHMEM memory zone to DTS

2019-10-18 Thread Eugeniy Paltsev
This is required as a preparation of merging nSIM and HASP defonfig and device tree. As we have HIGHMEM disabled in both HAPS and nSIM defconfigs this doesn't lead to any functional change. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/haps_hs.dts | 13 - 1 file changed, 8

[RFC 3/6] ARC: HAPS: use same UART configuration everywhere

2019-10-18 Thread Eugeniy Paltsev
For some reason we use ns8250 UART compatible on UP HAPS configuration and ns16550a (which is ns8250 with FIFO support) on SMP HAPS configuration. Given that we have same UART IP with same IP configuration on both HAPS configuration use ns16550a compatible everywhere. Signed-off-by: Eugeniy

[RFC 5/6] ARC: HAPS: cleanup defconfigs from unused ETH drivers

2019-10-18 Thread Eugeniy Paltsev
We have multiple vendors ethernet drivers enabled in haps_hs and haps_hs_smp defconfig. The only one we possibly require is VIRTIO_NET. So disable unused ones via disabling entire CONFIG_ETHERNET which controls all vendor-specific ethernet drivers. Signed-off-by: Eugeniy Paltsev --- arch/arc

[RFC 2/6] ARC: HAPS: cleanup defconfigs from unused IO-related options

2019-10-18 Thread Eugeniy Paltsev
We don't have any peripherals on HAPS which may require FB or input_devices support. So get rid of them. Signed-off-by: Eugeniy Paltsev --- arch/arc/configs/haps_hs_defconfig | 9 +++-- arch/arc/configs/haps_hs_smp_defconfig | 9 +++-- 2 files changed, 6 insertions(+), 12 deletions

[RFC 0/6] ARC: merge HAPS-HS with nSIM-HS configs

2019-10-18 Thread Eugeniy Paltsev
s_hs_defconfig and haps_hs_smp_defconfig which can be used on HAPS / nSIM / ZEBU / QEMU platforms without additionall changes in Linux kernel. Eugeniy Paltsev (6): ARC: regenerate nSIM and HAPS defconfigs ARC: HAPS: cleanup defconfigs from unused IO-related options ARC: HAPS: use same UART c

[RFC 6/6] ARC: merge HAPS-HS with nSIM-HS configs

2019-10-18 Thread Eugeniy Paltsev
of previously used "-prop=nsim_mem-dev=uart0,base=0xc0fc1000" "use_connect" and "irq" values of UART property remains untouched. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/nsim_hs.dts | 67 -- arch/arc/boot/dts/nsim_hs_idu.dts

[PATCH 1/2] ARC: [plat-hsdk]: Enable on-board SPI NOR flash IC

2019-10-18 Thread Eugeniy Paltsev
HSDK board has sst26wf016b SPI NOR flash IC installed, enable it. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/hsdk.dts | 8 arch/arc/configs/hsdk_defconfig | 2 ++ 2 files changed, 10 insertions(+) diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts

[PATCH 0/2] ARC: [plat-hsdk]: enable on-board SPI peripherals

2019-10-18 Thread Eugeniy Paltsev
HSDK board has SPI flash IC and SPI ADC IC. As all SPI-related blocking changes/fixes are finally applied we can enable them. Eugeniy Paltsev (2): ARC: [plat-hsdk]: Enable on-board SPI NOR flash IC ARC: [plat-hsdk]: Enable on-boardi SPI ADC IC arch/arc/boot/dts/hsdk.dts | 23

[PATCH 2/2] ARC: [plat-hsdk]: Enable on-boardi SPI ADC IC

2019-10-18 Thread Eugeniy Paltsev
HSDK board has adc108s102 SPI ADC IC installed, enable it. Signed-off-by: Eugeniy Paltsev --- arch/arc/boot/dts/hsdk.dts | 15 +++ arch/arc/configs/hsdk_defconfig | 4 2 files changed, 19 insertions(+) diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts

Re: [PATCH] ARC: unwind: Mark expected switch fall-through

2019-08-29 Thread Eugeniy Paltsev
Hi Gustavo, I guess this patch is already sent as a pull request to 'v5.3-rc7' by Vineet: https://www.mail-archive.com/linux-snps-arc@lists.infradead.org/msg05854.html --- Eugeniy Paltsev From: linux-snps-arc on behalf of Gustavo A. R. Silva Sent

[PATCH v2] ARC: [plat-hsdk]: allow to switch between AXI DMAC port configurations

2019-07-22 Thread Eugeniy Paltsev
g the kernel. Depend on this value we tweak memory bridge configuration and "dma-coherent" DTS property of DW AXI DMAC. Signed-off-by: Eugeniy Paltsev --- Changes v1->v2: * Force putting arc_hsdk_axi_dmac_coherent to data section * Add missed __init to hsdk_tweak_node_coherency a

Re: [TRIVIAL PATCH] of: per-file dtc preprocessor flags

2019-07-20 Thread Eugeniy Paltsev
Hi Masahiro, On Sat, 2019-07-20 at 11:40 +0900, Masahiro Yamada wrote: > On Sat, Jul 20, 2019 at 4:28 AM Eugeniy Paltsev > wrote: > > As of today we are able to pass custom flags to dtc compiler but not > > to dtc preprocessor. > > This ability is required for inclu

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