linux-kernel - Re: [PATCH 1/2] clk: exynos4: Add PCLK

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Message-ID: <55796660.1070702@samsung.com>
Date:	Thu, 11 Jun 2015 19:43:44 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Kukjin Kim <kgene@...nel.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org
Subject: Re: [PATCH 1/2] clk: exynos4: Add PCLK_ADC gate clock on Exynos4x12

W dniu 11.06.2015 o 17:26, Krzysztof Kozlowski pisze:
> Add proper gate clock for the Analog to Digital Converter (ADC) on
> Exynos4x12.
> 
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> ---
>  drivers/clk/samsung/clk-exynos4.c   | 3 +++
>  include/dt-bindings/clock/exynos4.h | 5 ++++-
>  2 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
> index 714d6ba782c8..5f32410a01f8 100644
> --- a/drivers/clk/samsung/clk-exynos4.c
> +++ b/drivers/clk/samsung/clk-exynos4.c
> @@ -85,6 +85,7 @@
>  #define DIV_PERIL4		0xc560
>  #define DIV_PERIL5		0xc564
>  #define E4X12_DIV_CAM1		0xc568
> +#define E4X12_GATE_BUS_FSYS1	0xc744
>  #define GATE_SCLK_CAM		0xc820
>  #define GATE_IP_CAM		0xc920
>  #define GATE_IP_TV		0xc924
> @@ -1095,6 +1096,8 @@ static struct samsung_gate_clock exynos4x12_gate_clks[] __initdata = {
>  		0),
>  	GATE(CLK_PPMUIMAGE, "ppmuimage", "aclk200", E4X12_GATE_IP_IMAGE, 9, 0,
>  		0),
> +	GATE(CLK_PCLK_ADC, "pclk_adc", "aclk133", E4X12_GATE_BUS_FSYS1, 16, 0,
> +		0),

Now I have even simpler idea. Don't add new clock id but just define
here the CLK_TSADC as:
GATE(CLK_TSADC, "tsadc", "aclk133", E4X12_GATE_BUS_FSYS1, 16, 0, 0);

With this change the second patch wouldn't be needed however this does
not reflect the Exynos 4x12 datasheet.

Any comments?

Best regards,
Krzysztof


>  	GATE(CLK_MIPI_HSI, "mipi_hsi", "aclk133", GATE_IP_FSYS, 10, 0, 0),
>  	GATE(CLK_CHIPID, "chipid", "aclk100", E4X12_GATE_IP_PERIR, 0, 0, 0),
>  	GATE(CLK_SYSREG, "sysreg", "aclk100", E4X12_GATE_IP_PERIR, 1,
> diff --git a/include/dt-bindings/clock/exynos4.h b/include/dt-bindings/clock/exynos4.h
> index c4b1676ea674..4548531736c1 100644
> --- a/include/dt-bindings/clock/exynos4.h
> +++ b/include/dt-bindings/clock/exynos4.h
> @@ -268,7 +268,10 @@
>  #define CLK_DIV_GDL		459
>  #define CLK_DIV_GDR		460
>  
> +/* Exynos4x12 only */
> +#define CLK_PCLK_ADC		461
> +
>  /* must be greater than maximal clock id */
> -#define CLK_NR_CLKS		461
> +#define CLK_NR_CLKS		462
>  
>  #endif /* _DT_BINDINGS_CLOCK_EXYNOS_4_H */
> 

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