such as memory mapped read etc. m25p80 flash driver
and other flash drivers can call this make use of such interfaces. The
interface should only be used with SPI flashes and cannot be used with
other SPI devices.
Signed-off-by: Vignesh R
---
drivers/spi/spi.c | 45
flash over SPI bus and get the
requested data.
Implement spi_flash_read() callback to support mmap read over SPI
flash devices. With this, the read throughput increases from ~100kB/s to
~2.5 MB/s.
Signed-off-by: Vignesh R
---
drivers/spi/spi-ti-qspi.c | 101
Add qspi memory mapped region entries for AM43xx based SoCs. Also,
update the binding documents for the controller to document this change.
Acked-by: Rob Herring
Signed-off-by: Vignesh R
---
v4: No changes.
Documentation/devicetree/bindings/spi/ti_qspi.txt | 5 +++--
arch/arm/boot/dts/am4372
Add qspi memory mapped region entries for DRA7xx based SoCs. Also,
update the binding documents for the controller to document this change.
Acked-by: Rob Herring
Signed-off-by: Vignesh R
---
v4: No changes.
Documentation/devicetree/bindings/spi/ti_qspi.txt | 14 ++
arch/arm/boot
ed on DRA74 EVM and AM437x-SK.
Read performance increases from ~100kB/s to ~2.5MB/s.
Vignesh R (5):
spi: introduce accelerated read support for spi flash devices
spi: spi-ti-qspi: add mmap mode read support
mtd: devices: m25p80: add support for mmap read request
ARM: dts: DRA7: add entr
Uart1 rxd is wakeup capable on DRA72 EVM. Hence, mark rxd line as
wakeup capable. This is similar to commit 66b0436977e2c ("ARM: dts:
dra7-evm: Mark uart1 rxd as wakeup capable") for DRA74 EVM.
Signed-off-by: Vignesh R
---
arch/arm/boot/dts/dra72-evm.dts | 2 ++
1 file changed, 2
Hi Brian,
On 11/13/2015 09:35 PM, Cyrille Pitchen wrote:
[...]
>
> In September I've sent a series of patches to enhance the support of QSPI
> flash
> memories. Patch 4 was dedicated to the m25p80 driver and set the
> rx_nbits / tx_nbits fields of spi_transfer struct(s) in order to configure t
Hi Brian,
On 11/12/2015 12:54 AM, Brian Norris wrote:
> In addition to my other comments:
>
[...]
>> +int (*spi_mtd_mmap_read)(struct spi_device *spi,
>> + loff_t from, size_t len,
>> + size_t *retlen, u_char *buf,
>> +
flash over SPI bus and get the
requested data.
Implement spi_mtd_mmap_read() callback to support mmap read over SPI
flash devices. With this, the read throughput increases from ~100kB/s to
~2.5 MB/s.
Signed-off-by: Vignesh R
---
v3:
* optimize enable/disable of mmap mode
drivers/spi/spi-ti
Add qspi memory mapped region entries for AM43xx based SoCs. Also,
update the binding documents for the controller to document this change.
Signed-off-by: Vignesh R
Acked-by: Rob Herring
---
Documentation/devicetree/bindings/spi/ti_qspi.txt | 5 +++--
arch/arm/boot/dts/am4372.dtsi
Add qspi memory mapped region entries for DRA7xx based SoCs. Also,
update the binding documents for the controller to document this change.
Signed-off-by: Vignesh R
Acked-by: Rob Herring
---
Documentation/devicetree/bindings/spi/ti_qspi.txt | 14 ++
arch/arm/boot/dts/dra7.dtsi
ck to
support memory mapped read interfaces. m25p80 flash driver and other
flash drivers can call this to request memory mapped read. The interface
should only be used MTD flashes and cannot be used with other SPI devices.
Signed-off-by: Vignesh R
---
v3:
* Remove use of mmap_lock_mutex, use bus_lock_
.
This patch series is based on the discussions here:
http://www.spinics.net/lists/linux-spi/msg04796.html
Tested on DRA74 EVM and AM437x-SK.
Read performance increases from ~100kB/s to ~2.5MB/s.
Vignesh R (5):
spi: introduce mmap read support for spi flash devices
spi: spi-ti-qspi: add mmap
Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() interface, if supported, to make use of
memory-mapped interface.
Signed-off-by: Vignesh R
On 11/06/2015 10:44 AM, Felipe Balbi wrote:
>
> Hi,
>
> Rob Herring writes:
>> On Tue, Nov 03, 2015 at 03:36:14PM +0530, Vignesh R wrote:
>>> Add qspi memory mapped region entries for AM43xx based SoCs. Also,
>>> update the binding documents for th
On 11/04/2015 08:09 PM, Mark Brown wrote:
> On Tue, Nov 03, 2015 at 03:36:10PM +0530, Vignesh R wrote:
>
>> +}
>> +mutex_lock(&master->mmap_lock_mutex);
>> +ret = master->spi_mtd_mmap_read(spi, from, len, retlen, buf,
>> +
On 11/04/2015 08:11 PM, Mark Brown wrote:
> On Tue, Nov 03, 2015 at 03:36:11PM +0530, Vignesh R wrote:
>
>> +ti_qspi_enable_memory_map(spi);
>> +ti_qspi_setup_mmap_read(spi, read_opcode, addr_width,
>> +dummy_bytes);
>> +memc
Hi,
On 11/03/2015 04:49 PM, Michal Suchanek wrote:
> On 3 November 2015 at 11:06, Vignesh R wrote:
>> In addition to providing direct access to SPI bus, some spi controller
>> hardwares (like ti-qspi) provide special memory mapped port
>> to accesses SPI flash devices in o
ck to
support memory mapped read interfaces. m25p80 flash driver and other
flash drivers can call this to request memory mapped read. The interface
should only be used MTD flashes and cannot be used with other SPI devices.
Signed-off-by: Vignesh R
---
drivers/spi/spi.c
flash over SPI bus and get the
requested data.
Implement spi_mtd_mmap_read() callback to support mmap read over SPI
flash devices. With this, the read throughput increases from ~100kB/s to
~2.5 MB/s.
Signed-off-by: Vignesh R
---
drivers/spi/spi-ti-qspi.c | 92
Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() interface, if supported, to make use of
memory-mapped interface.
Signed-off-by: Vignesh R
Add qspi memory mapped region entries for DRA7xx based SoCs. Also,
update the binding documents for the controller to document this change.
Signed-off-by: Vignesh R
---
Documentation/devicetree/bindings/spi/ti_qspi.txt | 13 +
arch/arm/boot/dts/dra7.dtsi | 6
Add qspi memory mapped region entries for AM43xx based SoCs. Also,
update the binding documents for the controller to document this change.
Signed-off-by: Vignesh R
---
Documentation/devicetree/bindings/spi/ti_qspi.txt | 5 +++--
arch/arm/boot/dts/am4372.dtsi | 4 +++-
2
/lists/linux-spi/msg04796.html
Tested on DRA74 EVM and AM437x-SK.
Read performance increases from ~100kB/s to ~2.5MB/s.
Vignesh R (5):
spi: introduce mmap read support for spi flash devices
spi: spi-ti-qspi: add mmap mode read support
mtd: devices: m25p80: add support for mmap read request
evice tree. Add wakeup irq entry to enable pixcir_i2c_ts
to wake the system from low power state.
Signed-off-by: Vignesh R
---
Since v1:
- correct interrupt flag.
- add comment wrt wakeup interrupt.
arch/arm/boot/dts/am437x-gp-evm.dts | 9 +
1 file changed, 9 insertions(+)
diff --git
On 10/14/2015 04:34 PM, Roger Quadros wrote:
> Vignesh,
>
> On 14/10/15 12:12, Vignesh R wrote:
>>
>>
>> On 10/14/2015 02:16 PM, Roger Quadros wrote:
>>
>>>
>>> On 14/10/15 08:52, Vignesh R wrote:
>>>> On am437x-gp-evm, pixcir_i2c_t
On 10/14/2015 02:16 PM, Roger Quadros wrote:
>
> On 14/10/15 08:52, Vignesh R wrote:
>> On am437x-gp-evm, pixcir_i2c_ts can wakeup the system from lower power
>> state via pinctrl and IO daisy chain using generic wakeirq framework.
>> With commit 3fffd1283927 ("i
With commit 3fffd1283927 ("i2c: allow specifying separate wakeup
interrupt in device tree") wakeirq is managed by i2c-core, so remove
wakeirq related code from pixcir_i2c_ts driver.
Signed-off-by: Vignesh R
---
drivers/input/touchscreen/pixcir_i2c_ts.c | 12
1 file c
evice tree. Add wakeup irq entry to enable pixcir_i2c_ts
to wake the system from low power state.
Signed-off-by: Vignesh R
---
arch/arm/boot/dts/am437x-gp-evm.dts | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts
b/arch/arm/boot/dts/am437x-gp-evm
of using interrupts.
This increases the throughput by 30% in both read and write case.
So, switch to polling mode instead of interrupts to determine completion
of word transfer.
Signed-off-by: Vignesh R
---
Tested on DRA74 Rev G EVM.
drivers/spi/spi-ti-qspi.c | 74
can overlap.
Fix this by moving writing invalid command to QSPI_SPI_CMD_REG to
before calling spi_finalize_current_message() call.
Cc: sta...@vger.kernel.org # v3.12+
Signed-off-by: Vignesh R
---
drivers/spi/spi-ti-qspi.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/driv
On 09/16/2015 04:26 PM, Mark Brown wrote:
> On Wed, Sep 16, 2015 at 03:38:09PM +0530, Vignesh R wrote:
>
>> But, I didn't get how to integrate with existing message queue. Memory
>> mapped read by-passes message queue of SPI core. Could you please
>> explain a
On 09/15/2015 12:05 AM, Mark Brown wrote:
> On Fri, Sep 04, 2015 at 04:55:33PM +0530, Jagan Teki wrote:
>> On 4 September 2015 at 13:59, Vignesh R wrote:
>
>>> + * @spi_mtd_mmap_read: some spi-controller hardwares provide memory
>>> + * mapped
On 09/15/2015 12:07 AM, Mark Brown wrote:
> On Fri, Sep 04, 2015 at 01:59:58PM +0530, Vignesh R wrote:
>> In addition to providing direct access to SPI bus, some spi controller
>> hardwares (like ti-qspi) provide special memory mapped port
>> to accesses SPI flash devices
On 09/14/2015 11:57 PM, Mark Brown wrote:
> On Fri, Sep 04, 2015 at 02:00:00PM +0530, Vignesh R wrote:
>
>> +if (spi->master->spi_mtd_mmap_read) {
>> +return spi->master->spi_mtd_mmap_read(spi, from, len,
>> +
On 09/14/2015 11:56 PM, Mark Brown wrote:
> On Fri, Sep 04, 2015 at 01:59:59PM +0530, Vignesh R wrote:
>
>> +static int ti_qspi_spi_mtd_mmap_read(struct spi_device *spi,
>> + loff_t from, size_t len,
>> +
:
http://www.spinics.net/lists/linux-spi/msg04796.html
Tested on DRA74 EVM and AM437x-SK.
Read performance increases from ~100kB/s to ~2.5MB/s.
Vignesh R (5):
spi: introduce mmap read support for spi flash devices
spi: spi-ti-qspi: add mmap mode read support
mtd: devices: m25p80: add support
over SPI bus and get the
requested data.
Implement spi_mtd_mmap_read() method to support mmap read over SPI
flash devices. With this, the read throughput increases from ~100kB/s to
~2.5 MB/s.
Signed-off-by: Vignesh R
---
drivers/spi/spi-ti-qspi.c | 106
od to
support memory mapped read interfaces. m25p80 flash driver and other
flash drivers can call this to request memory mapped read. The interface
should only be used mtd flashes and cannot be used with other spi devices.
Signed-off-by: Vignesh R
---
include/linux/spi/spi.h | 21 +++
Certain spi controllers may support memory mapped interface to read from
m25p80 type flash devices. This interface provides better read
performance than regular SPI interface.
Call spi_mtd_mmap_read() function, if available, to make use of
memory-mapped interface.
Signed-off-by: Vignesh R
Add qspi memory mapped region entries for AM43xx based SoCs. Also,
update the binding documents for the controller to document this change.
Signed-off-by: Vignesh R
---
Documentation/devicetree/bindings/spi/ti_qspi.txt | 5 +++--
arch/arm/boot/dts/am4372.dtsi | 4 +++-
2
Add qspi memory mapped region entries for DRA7xx based SoCs. Also,
update the binding documents for the controller to document this change.
Signed-off-by: Vignesh R
---
Documentation/devicetree/bindings/spi/ti_qspi.txt | 13 +
arch/arm/boot/dts/dra7.dtsi | 6
On 08/20/2015 11:25 PM, Mark Brown wrote:
> On Thu, Aug 20, 2015 at 04:00:59PM +0530, Vignesh R wrote:
>
>> -writeb(*txbuf, qspi->base + QSPI_SPI_DATA_REG);
>> +if (count >= QSPI_WLEN_MAX_BYTES) {
>> +
On 08/21/2015 03:47 AM, Michael Welling wrote:
> On Thu, Aug 20, 2015 at 05:41:30PM +0530, Vignesh R wrote:
>>
>>
>> On 08/19/2015 11:38 PM, Michael Welling wrote:
>>> On Wed, Aug 12, 2015 at 01:44:22PM -0500, Michael Welling wrote:
>>>> On Wed, Aug 12,
On 08/19/2015 11:38 PM, Michael Welling wrote:
> On Wed, Aug 12, 2015 at 01:44:22PM -0500, Michael Welling wrote:
>> On Wed, Aug 12, 2015 at 11:56:36AM +0530, Vignesh R wrote:
>>> Hi Michael,
>>>
>>> + Dmitry
>>>
>>> On 08/12/2015 12
EVM.
Signed-off-by: Vignesh R
---
drivers/spi/spi-ti-qspi.c | 34 ++
1 file changed, 30 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index 45844a227c5e..f4cea6834fad 100644
--- a/drivers/spi/spi-ti-qspi.c
+++ b
On 08/07/2015 03:46 PM, Michal Suchanek wrote:
[snip]
> On 7 August 2015 at 10:35, Vignesh R wrote:
>>
>>
>> On 08/07/2015 01:08 PM, Michal Suchanek wrote:
>>
>>> Now since the description is clearer it's obvious that ti-qspi cannot
>>> work fu
Hi Michael,
+ Dmitry
On 08/12/2015 12:15 AM, Michael Welling wrote:
> Adds a device tree parameter to set the open delay on the touchscreen
> conversion steps. Increasing this parameter helps the touch accuracy on
> some screens.
>
> Signed-off-by: Michael Welling
> ---
> .../bindings/input/to
On 08/07/2015 01:08 PM, Michal Suchanek wrote:
> Now since the description is clearer it's obvious that ti-qspi cannot
> work fully mmapped as fsl-qspi does because the setup has to be done
> over normal spi access and using non-m25p80 devices on the same bus is
> a requirement.
>
> The place w
On 08/06/2015 03:52 PM, Russell King - ARM Linux wrote:
> On Thu, Aug 06, 2015 at 12:01:37PM +0200, Michal Suchanek wrote:
>> Disclaimer: I am not familiar with the hardware for which this patch
>> adds support.
>>
>> However, I am familiar m25p80.c and as I understand it the controller
>> is bas
On 08/05/2015 10:51 AM, Michal Suchanek wrote:
> Hello,
>
> On 4 August 2015 at 19:59, R, Vignesh wrote:
>>
>>
>> On 8/4/2015 9:21 PM, Mark Brown wrote:
>>> On Mon, Aug 03, 2015 at 10:27:19AM +0530, Vignesh R wrote:
>>>
>>>> @u
On 07/31/2015 07:18 PM, Sekhar Nori wrote:
> On Tuesday 28 July 2015 02:11 PM, Vignesh R wrote:
>> Add qspi memory mapped region entries for DRA7xx based SoCs.
>>
>> Signed-off-by: Vignesh R
>> ---
>> arch/arm/boot/dts/am4372.dtsi | 4 +++-
>> 1 fi
On 08/01/2015 02:58 AM, Brian Norris wrote:
> On Tue, Jul 28, 2015 at 02:11:15PM +0530, Vignesh R wrote:
>> Add qspi memory mapped region entries for DRA7xx based SoCs.
>>
>> Signed-off-by: Vignesh R
>> ---
>> arch/arm/boot/dts/am4372.dtsi | 4 +++-
>&
On 07/31/2015 11:49 PM, Mark Brown wrote:
> On Tue, Jul 28, 2015 at 02:11:15PM +0530, Vignesh R wrote:
>> Add qspi memory mapped region entries for DRA7xx based SoCs.
>>
>> Signed-off-by: Vignesh R
>
>> qspi: qspi@4790 {
>>
Hi,
On 7/31/2015 11:47 PM, Mark Brown wrote:
> On Tue, Jul 28, 2015 at 02:11:12PM +0530, Vignesh R wrote:
>
>> Introduce use_mmap_read field in spi_message struct. This can be set by
>> mtd devices (m25p80) to indicate to spi-master (ti-qspi) to perform
>> memory ma
"irq", "wakeup";
>
> This patch is inspired by work done by Vignesh R for
> pixcir_i2c_ts driver.
>
> Signed-off-by: Dmitry Torokhov
Tested this patch on am437x-gp-evm with pixcir_i2c_ts as the wakeup
source. I was able to wakeup from suspend both as
On 07/23/2015 09:05 PM, R, Vignesh wrote:
>
>
> On 7/16/2015 9:01 PM, R, Vignesh wrote:
>> Hi,
>>
>> On 07/16/2015 03:24 AM, Paul Walmsley wrote:
>>> Hi,
>>>
>>> some comments.
>>>
>>> On Wed, 3 Jun 2015, Vignesh
On 07/28/2015 11:37 PM, Dmitry Torokhov wrote:
> On Tue, Jul 28, 2015 at 11:16:44PM +0530, R, Vignesh wrote:
>> Hi,
>>
>> On 7/28/2015 10:53 PM, Dmitry Torokhov wrote:
>>> On Tue, Jul 28, 2015 at 06:53:52PM +0530, Vignesh R wrote:
>>>> Hi Dmitry,
>>
Hi Dmitry,
On 07/25/2015 01:46 AM, Dmitry Torokhov wrote:
> On Fri, Jul 24, 2015 at 12:26:19PM -0700, Dmitry Torokhov wrote:
>> On Fri, Jul 24, 2015 at 02:14:57PM -0500, Rob Herring wrote:
>>> On Fri, Jul 24, 2015 at 1:26 PM, Dmitry Torokhov
>>> wrote:
Sometimes drivers might wish to transit
(hence mmap read is possible) or by other spi devices.
Signed-off-by: Vignesh R
---
include/linux/spi/spi.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index d673072346f2..f1a0329ee63f 100644
--- a/include/linux/spi/spi.h
+++ b/include
Add qspi memory mapped region entries for DRA7xx based SoCs.
Signed-off-by: Vignesh R
---
arch/arm/boot/dts/am4372.dtsi | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index ade28c790f4b..5317a0f24ab9 100644
QSPI_SPI_SWITCH_REG. The read_opcode,
read mode, dummy bytes are configured in QSPI_SPI_SETUPx_REG, then
memcpy is called to copy the requested data from flash to the rx_buf.
With this patch, the read speed increased from ~100kB/s to ~2.5MB/s on
DRA74 EVM.
Signed-off-by: Vignesh R
---
drivers/spi/spi-ti-qspi.c
Set use_mmap_read flag to true, to indicate to spi-master that the
spi-message is from mtd layer. This helps spi-master to do memory
mapped reads over SPI flash memories, when hardware support is
available.
Signed-off-by: Vignesh R
---
drivers/mtd/devices/m25p80.c | 3 +++
1 file changed, 3
Add qspi memory mapped region entries for AM43xx based SoCs.
Signed-off-by: Vignesh R
---
arch/arm/boot/dts/dra7.dtsi | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index 8f1e25bcecbd..75a17c78b0ad 100644
--- a
evm with macronix MX66l51235l flash.
[1] http://www.ti.com/lit/ug/spruhz6/spruhz6.pdf Section 24.5.4 QSPI
Functional Description
Vignesh R (5):
spi: introduce flag for memory mapped read
spi: spi-ti-qspi: Add memory mapped read support
mtd: devices: m25p80: set flag to request memory mapped
On 07/27/2015 04:19 PM, Roger Quadros wrote:
> Hi,
>
> On 23/07/15 17:54, Vignesh R wrote:
>> On am437x-gp-evm, pixcir touchscreen can wake the system from low power
>> state by generating wake-up interrupt via pinctrl and IO daisy chain.
>> Add support for optional
Pixcir_i2c_tsc driver can now wakeup the system from lower power state
via pinctrl and IO daisy chain using generic wakeirq framwework. Add
optional wakeup irq entry to allow pixcir_i2c_tsc to wake system from
low power state.
Signed-off-by: Vignesh R
---
v3:
* Drop "irq" suffix from
This is the v3 of the patch series to add optional wake irq support for
pixcir_i2c_tsc.
Tested on am437x-gp-evm, with some out of tree patches to support
suspend/resume on am437x.
Vignesh R (2):
input: touchscreen: pixcir_i2c_ts: Add support for optional wakeup
interrupt
ARM: dts
: Add automated device wake IRQ handling").
This is similar in approach to commit 2a0b965cfb6e ("serial: omap: Add
support for optional wake-up")
Signed-off-by: Vignesh R
---
v3:
* handle error code returned by of_irq_get_byname()
v2:
* use of_irq_get_byname()
* remove enable/disable_
or accept
> patches.
>
> see also comments below
>
[snip]
> 2015-06-22 15:18 GMT+02:00 Vignesh R :
>>
>
>> But calls to omap_hsmmc_card_init or omap_hsmmc_get_cd are in the same
>> mmc_rescan thread. Hence, moving the recovery code to init_card does not
&
Hi Dmitry,
On 07/20/2015 11:54 AM, Dmitry Torokhov wrote:
> On Sun, Jul 19, 2015 at 11:09:30PM -0700, Tony Lindgren wrote:
>> * Vignesh R [150719 21:53]:
>>> @@ -445,6 +443,8 @@ static struct pixcir_ts_platform_data
>>> *pixcir_parse_dt(struct device *dev)
>>&
Pixcir_i2c_tsc driver can now wakeup the system from lower power state
via pinctrl and IO daisy chain using generic wakeirq framwework. Add
optional wakeup irq entry to allow pixcir_i2c_tsc to wake system from
low power state.
Signed-off-by: Vignesh R
---
v2:
* Add interrupt-names property
of tree patches to support
suspend/resume on am437x.
Vignesh R (2):
input: touchscreen: pixcir_i2c_ts: Add support for optional wakeup
interrupt
ARM: dts: AM437x-gp-evm: Add wakeup interrupt source for
pixcir_i2c_tsc
arch/arm/boot/dts/am437x-gp-evm.dts | 4
drivers/input
: Add automated device wake IRQ handling").
This is similar in approach to commit 2a0b965cfb6e ("serial: omap: Add
support for optional wake-up")
Signed-off-by: Vignesh R
---
v2:
* use of_irq_get_byname()
* remove enable/disable_wake_irq()
drivers/input/touchscreen/
Hi Dmitry,
On 7/18/2015 3:21 AM, Dmitry Torokhov wrote:
> Hi Vignesh,
>
> On Fri, Jul 17, 2015 at 12:10:40PM +0530, Vignesh R wrote:
>> On am437x-gp-evm, pixcir touchscreen can wake the system from low power
>> state by generating wake-up interrupt via pinctrl and IO daisy
: Add automated device wake IRQ handling").
This is similar in approach to commit 2a0b965cfb6e ("serial: omap: Add
support for optional wake-up")
Signed-off-by: Vignesh R
---
drivers/input/touchscreen/pixcir_i2c_ts.c | 14 ++
1 file changed, 14 insertions(+)
diff -
Pixcir_i2c_tsc driver can now wakeup the system from lower power state
via pinctrl and IO daisy chain using generic wakeirq framwework. Add
optional wakeup irq entry to allow pixcir_i2c_tsc to wake system from
low power state.
Signed-off-by: Vignesh R
---
arch/arm/boot/dts/am437x-gp-evm.dts | 3
of tree patches to support
suspend/resume on am437x.
Vignesh R (2):
input: touchscreen: pixcir_i2c_ts: Add support for optional wakeup
interrupt
ARM: dts: AM437x-gp-evm: Add wakeup interrupt source for
pixcir_i2c_tsc
arch/arm/boot/dts/am437x-gp-evm.dts | 3 +++
drivers/input
Hi,
On 07/10/2015 06:56 PM, Alexander Sverdlin wrote:
> Hi!
>
> On 10/07/15 15:17, ext Vignesh R wrote:
>>>> I would propose you to throw away spinlocks. Convert threaded IRQ to
>>>>>> just one hardirq handler. And continue debugging. You will reduce the
&
On 07/10/2015 02:39 PM, Wolfram Sang wrote:
>
>> 60 s sounds way too much and actually I simply don't believe this is
>> the root cause. If I take a look into the driver, then I see, that
>
> I agree, this is just a workaround.
>
Yes, this is a workaround. I thought this is simpler change and
.
Signed-off-by: Vignesh R
---
I reproduced this while running i2cdump in a loop and reading from flash
using dd command.
drivers/i2c/busses/i2c-omap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index
On Tuesday 16 June 2015 04:07 PM, Vignesh R wrote:
>
> Hi,
>
> When using omap_hsmmc driver, if sd-card repeatedly plug unplugged
> multiple times quickly, card enumeration stops after few iterations.
> This can be easily reproduced on DRA74X EVM which uses omap_hsmmc dr
On Wednesday 03 June 2015 05:21 PM, Vignesh R wrote:
>
> Hi,
>
> This patch series adds support for PWMSS on DRA7. The IP is same as that
> present in AM33XX and AM43XX.
> The first patch changes clock domain in which PWMSS is present
> (l4per2_7xx_clkdm) to SW_WKUP. This
00 tries).
>
> see also comments below
>
> 2015-06-16 12:37 GMT+02:00 Vignesh R :
>> Usually when there is an error in transfer, DTO/CTO or other error
>> interrupts are raised. But if the card is unplugged in the middle of a
>> data transfer, it is observed that, nei
leads to a hang.
Fix this by checking for 'host->data' before it is actually cleared.
Fixes: ae4bf788ee9b ("mmc: omap_hsmmc: consolidate error report handling of
HSMMC IRQ")
CC: sta...@vger.kernel.org
Signed-off-by: Kishon Vijay Abraham I
Signed-off-by: Vignesh R
transaction.
Signed-off-by: Vignesh R
---
drivers/mmc/host/omap_hsmmc.c | 73 ++-
1 file changed, 72 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index fb4bfefd9250..ec1fff3c0c9c 100644
--- a/drivers/mmc
(for which error occurred) to complete.
Fix this, by reporting BADA, DEB, CEB errors to mmc-core as -EILSEQ, so
that the core can do appropriate handling.
Signed-off-by: Vignesh R
---
drivers/mmc/host/omap_hsmmc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc
.
Kishon Vijay Abraham I (1):
mmc: host: omap_hsmmc: Fix DTO and DCRC handling
Vignesh R (2):
mmc: host: omap_hsmmc: Handle BADA, DEB and CEB interrupts
mmc: host: omap_hsmmc: Add custom card detect irq handler
drivers/mmc/host/omap_hsmmc.c | 84 ---
1 file
Hi,
On Thursday 11 June 2015 09:04 PM, Evgeniy Polyakov wrote:
> Hi
>
> 25.05.2015, 08:15, "Vignesh R" :
>>> HDQ mode remains unchanged.
>>>
>>> Signed-off-by: Vignesh R
>
> I have no experience with omap_hdq platform, but there are quite
clock domain to
SW_WKUP. This is based on the input from the hardware team.
The rest of the patches add hwmod and dt entries and enable PWMSS on
DRA7 based SoCs.
Vignesh R (5):
ARM: OMAP2+: DRA7: clockdomain: change l4per2_7xx_clkdm to SW_WKUP
ARM: OMAP2+: DRA7: Add hwmod entries for PWMSS
ARM
Legacy IPs like PWMSS, present under l4per2_7xx_clkdm, cannot support
smart-idle when its clock domain is in HW_AUTO on DRA7 SoCs. Hence,
program clock domain to SW_WKUP.
Signed-off-by: Vignesh R
---
arch/arm/mach-omap2/clockdomains7xx_data.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion
L4PER2_L3_GICLK/2. The TRM does not show the division by 2.
[1] www.ti.com/lit/ug/spruhz6/spruhz6.pdf
Signed-off-by: Vignesh R
---
v2:
* add TRM references.
arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 239 ++
1 file changed, 239 insertions(+)
diff --git a/arch/arm/mach
SPRUHZ6[1], October 2014, Table 29-4 and Section 29.2.2.1,
Table 29-19 and the NOTE at the end of the table.
[1] www.ti.com/lit/ug/spruhz6/spruhz6.pdf
Signed-off-by: Vignesh R
---
v2:
* add TRM references.
arch/arm/boot/dts/dra7.dtsi | 5 +
arch/arm/boot/dts/dra7xx-clocks.dtsi
tbclk is needed by ehrpwm to generate pwm waveforms. Hence, register
the required clock information.
Signed-off-by: Vignesh R
---
drivers/clk/ti/clk-7xx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c
index 5d2217ae4478..366be43d15fe
Add PWMSS device tree nodes for DRA7 SoC family and add documentation
for dt bindings.
Signed-off-by: Vignesh R
---
.../devicetree/bindings/pwm/pwm-tiehrpwm.txt | 8 +++
.../devicetree/bindings/pwm/pwm-tipwmss.txt| 17 +-
arch/arm/boot/dts/dra7.dtsi
Hi Tero,
On Tuesday 02 June 2015 01:51 PM, Tero Kristo wrote:
> On 06/01/2015 02:53 PM, Vignesh R wrote:
>> Add hwmod entries for the PWMSS on DRA7.
>
> Can you provide some documentation references for this data?
>
> I was looking at the TRM and at least the main_clk
On Tuesday 02 June 2015 01:52 PM, Tero Kristo wrote:
> On 06/01/2015 02:53 PM, Vignesh R wrote:
>> tbclk is used by ehrpwm to generate PWM waveform on DRA7 SoC. Add Linux
>> clock to control ehrpwm tbclk.
>
> Care to add TRM reference here?
Ok, I will add the following
tbclk is used by ehrpwm to generate PWM waveform on DRA7 SoC. Add Linux
clock to control ehrpwm tbclk.
Signed-off-by: Vignesh R
---
arch/arm/boot/dts/dra7.dtsi | 5 +
arch/arm/boot/dts/dra7xx-clocks.dtsi | 26 ++
2 files changed, 31 insertions(+)
diff
tbclk is needed by ehrpwm to generate pwm waveforms. Hence, register
the required clock information.
Signed-off-by: Vignesh R
---
drivers/clk/ti/clk-7xx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/clk/ti/clk-7xx.c b/drivers/clk/ti/clk-7xx.c
index 5d2217ae4478..366be43d15fe
Add hwmod entries for the PWMSS on DRA7.
Signed-off-by: Vignesh R
---
arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 239 ++
1 file changed, 239 insertions(+)
diff --git a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c
index
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