Patchwork [V2,2/2] ARM: imx: set CKO1 parent clock source in imx6q sabresd

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Submitter Gary Zhang
Date Feb. 5, 2013, 1:37 a.m.
Message ID <1360028278-25856-1-git-send-email-b13634@freescale.com>
Download mbox | patch
Permalink /patch/218135/
State New
Headers show

Comments

Gary Zhang - Feb. 5, 2013, 1:37 a.m.
in imx6q sabresd board, set ahb as CKO1 parent clock sourrce

Signed-off-by: Gary Zhang <b13634@freescale.com>
---
 arch/arm/mach-imx/mach-imx6q.c |   14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)
Sascha Hauer - Feb. 5, 2013, 9:32 a.m.
On Tue, Feb 05, 2013 at 09:37:58AM +0800, Gary Zhang wrote:
> in imx6q sabresd board, set ahb as CKO1 parent clock sourrce

Can we have a comment in the code for what the CKO is used?

I don't like this board specific clock tree hacking at all, but having
no clue why this is done makes it harder to clean this up properly in
the future.

Sascha

> 
> Signed-off-by: Gary Zhang <b13634@freescale.com>
> ---
>  arch/arm/mach-imx/mach-imx6q.c |   14 +++++++++++---
>  1 files changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
> index 4eb1b3a..82c67de 100644
> --- a/arch/arm/mach-imx/mach-imx6q.c
> +++ b/arch/arm/mach-imx/mach-imx6q.c
> @@ -119,7 +119,7 @@ static int ksz9021rn_phy_fixup(struct phy_device *phydev)
>  	return 0;
>  }
>  
> -static void __init imx6q_sabrelite_cko1_setup(void)
> +static void __init cko1_setup(unsigned long freq)
>  {
>  	struct clk *cko1_sel, *ahb, *cko1;
>  	unsigned long rate;
> @@ -132,8 +132,9 @@ static void __init imx6q_sabrelite_cko1_setup(void)
>  		goto put_clk;
>  	}
>  	clk_set_parent(cko1_sel, ahb);
> -	rate = clk_round_rate(cko1, 16000000);
> +	rate = clk_round_rate(cko1, freq);
>  	clk_set_rate(cko1, rate);
> +
>  put_clk:
>  	if (!IS_ERR(cko1_sel))
>  		clk_put(cko1_sel);
> @@ -148,7 +149,12 @@ static void __init imx6q_sabrelite_init(void)
>  	if (IS_BUILTIN(CONFIG_PHYLIB))
>  		phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
>  				ksz9021rn_phy_fixup);
> -	imx6q_sabrelite_cko1_setup();
> +	cko1_setup(16000000);
> +}
> +
> +static void __init imx6q_sabresd_init(void)
> +{
> +	cko1_setup(24000000);
>  }
>  
>  static void __init imx6q_1588_init(void)
> @@ -193,6 +199,8 @@ static void __init imx6q_init_machine(void)
>  {
>  	if (of_machine_is_compatible("fsl,imx6q-sabrelite"))
>  		imx6q_sabrelite_init();
> +	else if (of_machine_is_compatible("fsl,imx6q-sabresd"))
> +		imx6q_sabresd_init();
>  
>  	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
>  
> -- 
> 1.7.0.4
> 
> 
>

Patch

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 4eb1b3a..82c67de 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -119,7 +119,7 @@  static int ksz9021rn_phy_fixup(struct phy_device *phydev)
 	return 0;
 }
 
-static void __init imx6q_sabrelite_cko1_setup(void)
+static void __init cko1_setup(unsigned long freq)
 {
 	struct clk *cko1_sel, *ahb, *cko1;
 	unsigned long rate;
@@ -132,8 +132,9 @@  static void __init imx6q_sabrelite_cko1_setup(void)
 		goto put_clk;
 	}
 	clk_set_parent(cko1_sel, ahb);
-	rate = clk_round_rate(cko1, 16000000);
+	rate = clk_round_rate(cko1, freq);
 	clk_set_rate(cko1, rate);
+
 put_clk:
 	if (!IS_ERR(cko1_sel))
 		clk_put(cko1_sel);
@@ -148,7 +149,12 @@  static void __init imx6q_sabrelite_init(void)
 	if (IS_BUILTIN(CONFIG_PHYLIB))
 		phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
 				ksz9021rn_phy_fixup);
-	imx6q_sabrelite_cko1_setup();
+	cko1_setup(16000000);
+}
+
+static void __init imx6q_sabresd_init(void)
+{
+	cko1_setup(24000000);
 }
 
 static void __init imx6q_1588_init(void)
@@ -193,6 +199,8 @@  static void __init imx6q_init_machine(void)
 {
 	if (of_machine_is_compatible("fsl,imx6q-sabrelite"))
 		imx6q_sabrelite_init();
+	else if (of_machine_is_compatible("fsl,imx6q-sabresd"))
+		imx6q_sabresd_init();
 
 	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);