clk: imx: scu: Do not enable runtime PM for CPU clks

Since CPU clocks are managed by CPUFREQ and ATF, do not enable
runtime PM otherwise rpm gets out of status as cpufreq
also manages clock states.

Signed-off-by: Nitin Garg <nitin.garg@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Abel Vesa <abel.vesa@nxp.com>

diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index 597cd27543709fbee5b7bde9267373d90523469f..083da31dc3ead77a824091f033fbb2fe1f18a4f0 100644 (file)
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c
@@ -521,16 +521,19 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
        struct clk_hw *hw;
        int ret;
 
-       pm_runtime_set_suspended(dev);
-       pm_runtime_set_autosuspend_delay(dev, 50);
-       pm_runtime_use_autosuspend(&pdev->dev);
-       pm_runtime_enable(dev);
-
-       ret = pm_runtime_get_sync(dev);
-       if (ret) {
-               pm_genpd_remove_device(dev);
-               pm_runtime_disable(dev);
-               return ret;
+       if (!((clk->rsrc == IMX_SC_R_A35) || (clk->rsrc == IMX_SC_R_A53) ||
+           (clk->rsrc == IMX_SC_R_A72))) {
+               pm_runtime_set_suspended(dev);
+               pm_runtime_set_autosuspend_delay(dev, 50);
+               pm_runtime_use_autosuspend(&pdev->dev);
+               pm_runtime_enable(dev);
+
+               ret = pm_runtime_get_sync(dev);
+               if (ret) {
+                       pm_genpd_remove_device(dev);
+                       pm_runtime_disable(dev);
+                       return ret;
+               }
        }
 
        hw = __imx_clk_scu(dev, clk->name, clk->parents, clk->num_parents,
@@ -543,8 +546,11 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
        clk->hw = hw;
        list_add_tail(&clk->node, &imx_scu_clks[clk->rsrc]);
 
-       pm_runtime_mark_last_busy(&pdev->dev);
-       pm_runtime_put_autosuspend(&pdev->dev);
+       if (!((clk->rsrc == IMX_SC_R_A35) || (clk->rsrc == IMX_SC_R_A53) ||
+           (clk->rsrc == IMX_SC_R_A72))) {
+               pm_runtime_mark_last_busy(&pdev->dev);
+               pm_runtime_put_autosuspend(&pdev->dev);
+       }
 
        dev_dbg(dev, "register SCU clock rsrc:%d type:%d\n", clk->rsrc,
                clk->clk_type);