[linux-sunxi] Re: [PATCH 2/2] sunxi: switch PRCM to non-secure on H3/H5 SoCs

2017-08-08 Thread Chen-Yu Tsai 
On Thu, Jul 27, 2017 at 3:31 AM, Maxime Ripard
 wrote:
> On Wed, Jul 26, 2017 at 07:55:24PM +0800, icen...@aosc.io wrote:
>> 在 2017-07-20 14:00，Icenowy Zheng 写道：
>> > The PRCM of H3/H5 SoCs have a secure/non-secure switch, which controls
>> > the access to some clock/power related registers in PRCM.
>> >
>> > Current Linux kernel will access the CPUS (AR100) clock in the PRCM
>> > block, so the PRCM should be switched to non-secure.
>> >
>> > Add code to switch the PRCM to non-secure.
>>
>> Ping.
>>
>> Maxime and Jagan, can you merge this patchset?
>>
>> This is necessary for R_CCU to work properly on H3.
>
> Acked-by: Maxime Ripard 

Tested-by: Chen-Yu Tsai 

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[linux-sunxi] Re: [PATCH 2/2] sunxi: switch PRCM to non-secure on H3/H5 SoCs

2017-07-26 Thread Maxime Ripard 
On Wed, Jul 26, 2017 at 07:55:24PM +0800, icen...@aosc.io wrote:
> 在 2017-07-20 14:00，Icenowy Zheng 写道：
> > The PRCM of H3/H5 SoCs have a secure/non-secure switch, which controls
> > the access to some clock/power related registers in PRCM.
> > 
> > Current Linux kernel will access the CPUS (AR100) clock in the PRCM
> > block, so the PRCM should be switched to non-secure.
> > 
> > Add code to switch the PRCM to non-secure.
> 
> Ping.
> 
> Maxime and Jagan, can you merge this patchset?
> 
> This is necessary for R_CCU to work properly on H3.

Acked-by: Maxime Ripard 

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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[linux-sunxi] Re: [PATCH 2/2] sunxi: switch PRCM to non-secure on H3/H5 SoCs

2017-07-26 Thread icenowy 

在 2017-07-20 14:00，Icenowy Zheng 写道：

The PRCM of H3/H5 SoCs have a secure/non-secure switch, which controls
the access to some clock/power related registers in PRCM.

Current Linux kernel will access the CPUS (AR100) clock in the PRCM
block, so the PRCM should be switched to non-secure.

Add code to switch the PRCM to non-secure.


Ping.

Maxime and Jagan, can you merge this patchset?

This is necessary for R_CCU to work properly on H3.



Signed-off-by: Icenowy Zheng 
---
 arch/arm/mach-sunxi/clock_sun6i.c | 6 ++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/mach-sunxi/clock_sun6i.c
b/arch/arm/mach-sunxi/clock_sun6i.c
index ec5b026ef5..870ff5b1e0 100644
--- a/arch/arm/mach-sunxi/clock_sun6i.c
+++ b/arch/arm/mach-sunxi/clock_sun6i.c
@@ -66,11 +66,17 @@ void clock_init_sec(void)
 #ifdef CONFIG_MACH_SUNXI_H3_H5
struct sunxi_ccm_reg * const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+   struct sunxi_prcm_reg * const prcm =
+   (struct sunxi_prcm_reg *)SUNXI_PRCM_BASE;

setbits_le32(>ccu_sec_switch,
 CCM_SEC_SWITCH_MBUS_NONSEC |
 CCM_SEC_SWITCH_BUS_NONSEC |
 CCM_SEC_SWITCH_PLL_NONSEC);
+   setbits_le32(>prcm_sec_switch,
+PRCM_SEC_SWITCH_APB0_CLK_NONSEC |
+PRCM_SEC_SWITCH_PLL_CFG_NONSEC |
+PRCM_SEC_SWITCH_PWR_GATE_NONSEC);
 #endif
 }


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