diff mbox

[2/2] clk: stm32: Add DSI clock for STM32F469 Board

Message ID 1516286980-8603-3-git-send-email-gabriel.fernandez@st.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Gabriel FERNANDEZ Jan. 18, 2018, 2:49 p.m. UTC 
From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch adds DSI clock for STM32F469 board

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
---
 drivers/clk/clk-stm32f4.c                 | 11 ++++++++++-
 include/dt-bindings/clock/stm32fx-clock.h |  3 ++-
 2 files changed, 12 insertions(+), 2 deletions(-)

Comments

Philippe CORNU Jan. 18, 2018, 4:37 p.m. UTC | #1 
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Rob Herring Jan. 29, 2018, 6:56 p.m. UTC | #2 
On Thu, Jan 18, 2018 at 03:49:40PM +0100, gabriel.fernandez@st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> This patch adds DSI clock for STM32F469 board
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> ---
>  drivers/clk/clk-stm32f4.c                 | 11 ++++++++++-
>  include/dt-bindings/clock/stm32fx-clock.h |  3 ++-
>  2 files changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
> index da44f8d..3c28798 100644
> --- a/drivers/clk/clk-stm32f4.c
> +++ b/drivers/clk/clk-stm32f4.c
> @@ -521,7 +521,7 @@ struct stm32f4_pll_data {
>  };
>  
>  static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = {
> -	{ PLL,	   50, { "pll",	     "pll-q",    NULL	    } },
> +	{ PLL,	   50, { "pll",	     "pll-q",    "pll-r"    } },
>  	{ PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },
>  	{ PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },
>  };
> @@ -1047,6 +1047,8 @@ static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name,
>  	"no-clock", "lse", "lsi", "hse-rtc"
>  };
>  
> +static const char *dsi_parent[2] = { NULL, "pll-r" };
> +
>  static const char *lcd_parent[1] = { "pllsai-r-div" };
>  
>  static const char *i2s_parents[2] = { "plli2s-r", NULL };
> @@ -1156,6 +1158,12 @@ struct stm32f4_clk_data {
>  		NO_GATE, 0,
>  		0
>  	},
> +	{
> +		CLK_F469_DSI, "dsi", dsi_parent, ARRAY_SIZE(dsi_parent),
> +		STM32F4_RCC_DCKCFGR, 29, 1,
> +		STM32F4_RCC_APB2ENR, 27,
> +		CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT
> +	},
>  };
>  
>  static const struct stm32_aux_clk stm32f746_aux_clk[] = {
> @@ -1450,6 +1458,7 @@ static void __init stm32f4_rcc_init(struct device_node *np)
>  	stm32f4_gate_map = data->gates_map;
>  
>  	hse_clk = of_clk_get_parent_name(np, 0);
> +	dsi_parent[0] = hse_clk;
>  
>  	i2s_in_clk = of_clk_get_parent_name(np, 1);
>  
> diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h
> index 4d523b0..58d8b51 100644
> --- a/include/dt-bindings/clock/stm32fx-clock.h
> +++ b/include/dt-bindings/clock/stm32fx-clock.h
> @@ -35,8 +35,9 @@
>  #define CLK_SAIQ_PDIV		13
>  #define CLK_HSI			14
>  #define CLK_SYSCLK		15
> +#define CLK_F469_DSI		16
>  
> -#define END_PRIMARY_CLK		16
> +#define END_PRIMARY_CLK		17
>  
>  #define CLK_HDMI_CEC		16
>  #define CLK_SPDIF		17

This looks suspicious. What's the relationship of these clocks?

Rob
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Gabriel FERNANDEZ Jan. 30, 2018, 3:22 p.m. UTC | #3 
Hi Rob,

Thanks for reviewing.


On 01/29/2018 07:56 PM, Rob Herring wrote:
> On Thu, Jan 18, 2018 at 03:49:40PM +0100, gabriel.fernandez@st.com wrote:

>> From: Gabriel Fernandez <gabriel.fernandez@st.com>

>>

>> This patch adds DSI clock for STM32F469 board

>>

>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

>> ---

>>   drivers/clk/clk-stm32f4.c                 | 11 ++++++++++-

>>   include/dt-bindings/clock/stm32fx-clock.h |  3 ++-

>>   2 files changed, 12 insertions(+), 2 deletions(-)

>>

>> diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c

>> index da44f8d..3c28798 100644

>> --- a/drivers/clk/clk-stm32f4.c

>> +++ b/drivers/clk/clk-stm32f4.c

>> @@ -521,7 +521,7 @@ struct stm32f4_pll_data {

>>   };

>>   

>>   static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = {

>> -	{ PLL,	   50, { "pll",	     "pll-q",    NULL	    } },

>> +	{ PLL,	   50, { "pll",	     "pll-q",    "pll-r"    } },

>>   	{ PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },

>>   	{ PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },

>>   };

>> @@ -1047,6 +1047,8 @@ static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name,

>>   	"no-clock", "lse", "lsi", "hse-rtc"

>>   };

>>   

>> +static const char *dsi_parent[2] = { NULL, "pll-r" };

>> +

>>   static const char *lcd_parent[1] = { "pllsai-r-div" };

>>   

>>   static const char *i2s_parents[2] = { "plli2s-r", NULL };

>> @@ -1156,6 +1158,12 @@ struct stm32f4_clk_data {

>>   		NO_GATE, 0,

>>   		0

>>   	},

>> +	{

>> +		CLK_F469_DSI, "dsi", dsi_parent, ARRAY_SIZE(dsi_parent),

>> +		STM32F4_RCC_DCKCFGR, 29, 1,

>> +		STM32F4_RCC_APB2ENR, 27,

>> +		CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT

>> +	},

>>   };

>>   

>>   static const struct stm32_aux_clk stm32f746_aux_clk[] = {

>> @@ -1450,6 +1458,7 @@ static void __init stm32f4_rcc_init(struct device_node *np)

>>   	stm32f4_gate_map = data->gates_map;

>>   

>>   	hse_clk = of_clk_get_parent_name(np, 0);

>> +	dsi_parent[0] = hse_clk;

>>   

>>   	i2s_in_clk = of_clk_get_parent_name(np, 1);

>>   

>> diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h

>> index 4d523b0..58d8b51 100644

>> --- a/include/dt-bindings/clock/stm32fx-clock.h

>> +++ b/include/dt-bindings/clock/stm32fx-clock.h

>> @@ -35,8 +35,9 @@

>>   #define CLK_SAIQ_PDIV		13

>>   #define CLK_HSI			14

>>   #define CLK_SYSCLK		15

>> +#define CLK_F469_DSI		16

>>   

>> -#define END_PRIMARY_CLK		16

>> +#define END_PRIMARY_CLK		17

>>   

>>   #define CLK_HDMI_CEC		16

>>   #define CLK_SPDIF		17

> This looks suspicious. What's the relationship of these clocks?

I have just added CLK_F469_DSI in the binding, and shifted the end of 
primary clock for F4 clocks.

'CLK_F469_DSI' binding is only used for STM32F469 and not for STM32F746 
(that why CLK_HDMI_CEC can use the index 16)


BR

Gabriel.
>

> Rob
diff mbox

Patch

diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
index da44f8d..3c28798 100644
--- a/drivers/clk/clk-stm32f4.c
+++ b/drivers/clk/clk-stm32f4.c
@@ -521,7 +521,7 @@  struct stm32f4_pll_data {
 };
 
 static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = {
-	{ PLL,	   50, { "pll",	     "pll-q",    NULL	    } },
+	{ PLL,	   50, { "pll",	     "pll-q",    "pll-r"    } },
 	{ PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },
 	{ PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },
 };
@@ -1047,6 +1047,8 @@  static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name,
 	"no-clock", "lse", "lsi", "hse-rtc"
 };
 
+static const char *dsi_parent[2] = { NULL, "pll-r" };
+
 static const char *lcd_parent[1] = { "pllsai-r-div" };
 
 static const char *i2s_parents[2] = { "plli2s-r", NULL };
@@ -1156,6 +1158,12 @@  struct stm32f4_clk_data {
 		NO_GATE, 0,
 		0
 	},
+	{
+		CLK_F469_DSI, "dsi", dsi_parent, ARRAY_SIZE(dsi_parent),
+		STM32F4_RCC_DCKCFGR, 29, 1,
+		STM32F4_RCC_APB2ENR, 27,
+		CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT
+	},
 };
 
 static const struct stm32_aux_clk stm32f746_aux_clk[] = {
@@ -1450,6 +1458,7 @@  static void __init stm32f4_rcc_init(struct device_node *np)
 	stm32f4_gate_map = data->gates_map;
 
 	hse_clk = of_clk_get_parent_name(np, 0);
+	dsi_parent[0] = hse_clk;
 
 	i2s_in_clk = of_clk_get_parent_name(np, 1);
 
diff --git a/include/dt-bindings/clock/stm32fx-clock.h b/include/dt-bindings/clock/stm32fx-clock.h
index 4d523b0..58d8b51 100644
--- a/include/dt-bindings/clock/stm32fx-clock.h
+++ b/include/dt-bindings/clock/stm32fx-clock.h
@@ -35,8 +35,9 @@ 
 #define CLK_SAIQ_PDIV		13
 #define CLK_HSI			14
 #define CLK_SYSCLK		15
+#define CLK_F469_DSI		16
 
-#define END_PRIMARY_CLK		16
+#define END_PRIMARY_CLK		17
 
 #define CLK_HDMI_CEC		16
 #define CLK_SPDIF		17