diff mbox series

[03/10] clk: imx: scu: bypass cpu clock save and restore

Message ID 20210604090943.3519350-4-aisheng.dong@nxp.com (mailing list archive)
State New, archived
Headers show
Series clk: imx: scu: add more scu clock features | expand

Commit Message

Dong Aisheng June 4, 2021, 9:09 a.m. UTC
CPU clock is managed by ATF. No need save and restore.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
 drivers/clk/imx/clk-scu.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Abel Vesa June 14, 2021, 8:54 a.m. UTC | #1
On 21-06-04 17:09:36, Dong Aisheng wrote:
> CPU clock is managed by ATF. No need save and restore.
> 
> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>

Looks good to me.

Reviewed-by: Abel Vesa <abel.vesa@nxp.com>

> ---
>  drivers/clk/imx/clk-scu.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
> index 680b2650fd45..d87a1a1b297e 100644
> --- a/drivers/clk/imx/clk-scu.c
> +++ b/drivers/clk/imx/clk-scu.c
> @@ -538,6 +538,11 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
>  static int __maybe_unused imx_clk_scu_suspend(struct device *dev)
>  {
>  	struct clk_scu *clk = dev_get_drvdata(dev);
> +	u32 rsrc_id = clk->rsrc_id;
> +
> +	if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) ||
> +	    (rsrc_id == IMX_SC_R_A72))
> +		return 0;
>  
>  	clk->rate = clk_hw_get_rate(&clk->hw);
>  	clk->is_enabled = clk_hw_is_enabled(&clk->hw);
> @@ -554,8 +559,13 @@ static int __maybe_unused imx_clk_scu_suspend(struct device *dev)
>  static int __maybe_unused imx_clk_scu_resume(struct device *dev)
>  {
>  	struct clk_scu *clk = dev_get_drvdata(dev);
> +	u32 rsrc_id = clk->rsrc_id;
>  	int ret = 0;
>  
> +	if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) ||
> +	    (rsrc_id == IMX_SC_R_A72))
> +		return 0;
> +
>  	if (clk->rate) {
>  		ret = clk_scu_set_rate(&clk->hw, clk->rate, 0);
>  		dev_dbg(dev, "restore rate %d %s\n", clk->rate,
> -- 
> 2.25.1
>
diff mbox series

Patch

diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index 680b2650fd45..d87a1a1b297e 100644
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c
@@ -538,6 +538,11 @@  static int imx_clk_scu_probe(struct platform_device *pdev)
 static int __maybe_unused imx_clk_scu_suspend(struct device *dev)
 {
 	struct clk_scu *clk = dev_get_drvdata(dev);
+	u32 rsrc_id = clk->rsrc_id;
+
+	if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) ||
+	    (rsrc_id == IMX_SC_R_A72))
+		return 0;
 
 	clk->rate = clk_hw_get_rate(&clk->hw);
 	clk->is_enabled = clk_hw_is_enabled(&clk->hw);
@@ -554,8 +559,13 @@  static int __maybe_unused imx_clk_scu_suspend(struct device *dev)
 static int __maybe_unused imx_clk_scu_resume(struct device *dev)
 {
 	struct clk_scu *clk = dev_get_drvdata(dev);
+	u32 rsrc_id = clk->rsrc_id;
 	int ret = 0;
 
+	if ((rsrc_id == IMX_SC_R_A35) || (rsrc_id == IMX_SC_R_A53) ||
+	    (rsrc_id == IMX_SC_R_A72))
+		return 0;
+
 	if (clk->rate) {
 		ret = clk_scu_set_rate(&clk->hw, clk->rate, 0);
 		dev_dbg(dev, "restore rate %d %s\n", clk->rate,