[PATCH] clk: exynos4: Add clock ID for ppmuleft/right

[PATCH] clk: exynos4: Add clock ID for ppmuleft/right

[Chanwoo Choi]

There is no gate for the PPMU Left/Right to the LEFT/RIGHTBUS block.
So, this patch add ppmuleft/right clock which is used to calculate memory bus
utilization by using PPMU(Performance Profiling Monitoring Unit).

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 drivers/clk/samsung/clk-exynos4.c   |  2 ++
 include/dt-bindings/clock/exynos4.h | 26 ++++++++++++++------------
 2 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
index 010f071..3819485 100644
--- a/drivers/clk/samsung/clk-exynos4.c
+++ b/drivers/clk/samsung/clk-exynos4.c
@@ -717,6 +717,8 @@ static struct samsung_gate_clock exynos4_gate_clks[] __initdata = {
 			0, 0),
 	GATE(CLK_AC97, "ac97", "aclk100", GATE_IP_PERIL, 27,
 			0, 0),
+	GATE(CLK_PPMULEFT, "ppmuleft", "aclk200", GATE_IP_LEFTBUS, 1, 0, 0),
+	GATE(CLK_PPMURIGHT, "ppmuright", "aclk200", GATE_IP_RIGHTBUS, 1, 0, 0),
 };
 
 /* list of gate clocks supported in exynos4210 soc */
diff --git a/include/dt-bindings/clock/exynos4.h b/include/dt-bindings/clock/exynos4.h
index 75aff33..cd7fecf 100644
--- a/include/dt-bindings/clock/exynos4.h
+++ b/include/dt-bindings/clock/exynos4.h
@@ -215,20 +215,22 @@
 #define CLK_SPI1_ISP_SCLK	381 /* Exynos4x12 only */
 #define CLK_UART_ISP_SCLK	382 /* Exynos4x12 only */
 #define CLK_TMU_APBIF		383
+#define CLK_PPMULEFT		384
+#define CLK_PPMURIGHT		385
 
 /* mux clocks */
-#define CLK_MOUT_FIMC0		384
-#define CLK_MOUT_FIMC1		385
-#define CLK_MOUT_FIMC2		386
-#define CLK_MOUT_FIMC3		387
-#define CLK_MOUT_CAM0		388
-#define CLK_MOUT_CAM1		389
-#define CLK_MOUT_CSIS0		390
-#define CLK_MOUT_CSIS1		391
-#define CLK_MOUT_G3D0		392
-#define CLK_MOUT_G3D1		393
-#define CLK_MOUT_G3D		394
-#define CLK_ACLK400_MCUISP	395 /* Exynos4x12 only */
+#define CLK_MOUT_FIMC0		386
+#define CLK_MOUT_FIMC1		387
+#define CLK_MOUT_FIMC2		388
+#define CLK_MOUT_FIMC3		389
+#define CLK_MOUT_CAM0		390
+#define CLK_MOUT_CAM1		391
+#define CLK_MOUT_CSIS0		392
+#define CLK_MOUT_CSIS1		393
+#define CLK_MOUT_G3D0		394
+#define CLK_MOUT_G3D1		395
+#define CLK_MOUT_G3D		396
+#define CLK_ACLK400_MCUISP	397 /* Exynos4x12 only */
 
 /* div clocks */
 #define CLK_DIV_ISP0		450 /* Exynos4x12 only */
-- 
1.8.0

Re: [PATCH] clk: exynos4: Add clock ID for ppmuleft/right

[Sylwester Nawrocki]

Hi Chanwoo,

On 12/03/14 08:08, Chanwoo Choi wrote:
> There is no gate for the PPMU Left/Right to the LEFT/RIGHTBUS block.
> So, this patch add ppmuleft/right clock which is used to calculate memory bus
> utilization by using PPMU(Performance Profiling Monitoring Unit).
> 
> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> ---
>  drivers/clk/samsung/clk-exynos4.c   |  2 ++
>  include/dt-bindings/clock/exynos4.h | 26 ++++++++++++++------------
>  2 files changed, 16 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
> index 010f071..3819485 100644
> --- a/drivers/clk/samsung/clk-exynos4.c
> +++ b/drivers/clk/samsung/clk-exynos4.c
> @@ -717,6 +717,8 @@ static struct samsung_gate_clock exynos4_gate_clks[] __initdata = {
>  			0, 0),
>  	GATE(CLK_AC97, "ac97", "aclk100", GATE_IP_PERIL, 27,
>  			0, 0),
> +	GATE(CLK_PPMULEFT, "ppmuleft", "aclk200", GATE_IP_LEFTBUS, 1, 0, 0),
> +	GATE(CLK_PPMURIGHT, "ppmuright", "aclk200", GATE_IP_RIGHTBUS, 1, 0, 0),
>  };
>  
>  /* list of gate clocks supported in exynos4210 soc */
> diff --git a/include/dt-bindings/clock/exynos4.h b/include/dt-bindings/clock/exynos4.h
> index 75aff33..cd7fecf 100644
> --- a/include/dt-bindings/clock/exynos4.h
> +++ b/include/dt-bindings/clock/exynos4.h
> @@ -215,20 +215,22 @@
>  #define CLK_SPI1_ISP_SCLK	381 /* Exynos4x12 only */
>  #define CLK_UART_ISP_SCLK	382 /* Exynos4x12 only */
>  #define CLK_TMU_APBIF		383
> +#define CLK_PPMULEFT		384
> +#define CLK_PPMURIGHT		385
>  
>  /* mux clocks */
> -#define CLK_MOUT_FIMC0		384

You must not change the existing clock indices like this, use indexes
that are currently unused for CLK_PPMU* clocks.
If you do that the kernel would stop working with existing dtbs.
This interface is an ABI, so you can't just rearrange the indices
at will like this.

--
Regards,
Sylwester