linux-kernel - Re: [[PATCHv2] 1/3] ARM: imx: clk-vf610: Add clock for SNVS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 11 Nov 2014 22:13:44 +0100
From:	Stefan Agner <stefan@...er.ch>
To:	Sanchayan Maity <maitysanchayan@...il.com>
Cc:	rtc-linux@...glegroups.com, shawn.guo@...aro.org,
	linux@....linux.org.uk, kernel@...gutronix.de,
	b35083@...escale.com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [[PATCHv2] 1/3] ARM: imx: clk-vf610: Add clock for SNVS

On 2014-11-07 14:04, Sanchayan Maity wrote:
> This patch adds support for clock gating of
> the SNVS peripheral.
> 
> Signed-off-by: Sanchayan Maity <maitysanchayan@...il.com>
> ---
>  arch/arm/mach-imx/clk-vf610.c           |    1 +
>  include/dt-bindings/clock/vf610-clock.h |    3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-imx/clk-vf610.c b/arch/arm/mach-imx/clk-vf610.c
> index 5937dde..bbf4785 100644
> --- a/arch/arm/mach-imx/clk-vf610.c
> +++ b/arch/arm/mach-imx/clk-vf610.c
> @@ -379,6 +379,7 @@ static void __init vf610_clocks_init(struct
> device_node *ccm_node)
>  	clk[VF610_CLK_DMAMUX1] = imx_clk_gate2("dmamux1", "platform_bus",
> CCM_CCGR0, CCM_CCGRx_CGn(5));
>  	clk[VF610_CLK_DMAMUX2] = imx_clk_gate2("dmamux2", "platform_bus",
> CCM_CCGR6, CCM_CCGRx_CGn(1));
>  	clk[VF610_CLK_DMAMUX3] = imx_clk_gate2("dmamux3", "platform_bus",
> CCM_CCGR6, CCM_CCGRx_CGn(2));
> +	clk[VF610_CLK_SNVS] = imx_clk_gate2("snvs-rtc", "ipg_bus",
> CCM_CCGR6, CCM_CCGRx_CGn(7));

Just noticed that imx_clk_gate2 always sets both gates. This means, the
RTC will be gated when going into low power modes. We might need to use
a different gating when we want to use the RTC as wakeup source. But
this would be part of the suspend/resume patchset...

>  
>  	imx_check_clocks(clk, ARRAY_SIZE(clk));
>  
> diff --git a/include/dt-bindings/clock/vf610-clock.h
> b/include/dt-bindings/clock/vf610-clock.h
> index 801c0ac..979d24a 100644
> --- a/include/dt-bindings/clock/vf610-clock.h
> +++ b/include/dt-bindings/clock/vf610-clock.h
> @@ -192,6 +192,7 @@
>  #define VF610_PLL5_BYPASS		179
>  #define VF610_PLL6_BYPASS		180
>  #define VF610_PLL7_BYPASS		181
> -#define VF610_CLK_END			182
> +#define VF610_CLK_SNVS			182
> +#define VF610_CLK_END			183
>  
>  #endif /* __DT_BINDINGS_CLOCK_VF610_H */

Acked-By: Stefan Agner <stefan@...er.ch>

--
Stefan

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/