Re: [PATCH v2] cpufreq: rockchip: add driver

[Finley Xiao]

Hi Viresh,

can we add a of_match_table with a common compatible name as follows ?
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -470,10 +470,16 @@ static int dt_cpufreq_remove(struct 
platform_device *pdev)
        cpufreq_unregister_driver(&dt_cpufreq_driver);
        return 0;
 }
+static const struct of_device_id dt_cpufreq_of_match[] = {
+       { .compatible = "***,***", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, dt_cpufreq_of_match);
 static struct platform_driver dt_cpufreq_platdrv = {
        .driver = {
                .name   = "cpufreq-dt",
+               .of_match_table = dt_cpufreq_of_match,
        },

--- a/arch/arm64/boot/dts/rockchip/rk3366.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3366.dtsi
+       cpufreq {
+               compatible = "***,***";
+       }

Does it create a DT node for a dummy device too ?


在 2016/3/24 14:43, Viresh Kumar 写道:
On 24-03-16, 11:01, Feng Xiao wrote:
hi all,
      I found that it could match the cpufreq-dt driver succesfully only with
the following changes.
--- a/arch/arm64/boot/dts/rockchip/rk3366.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3366.dtsi
@@ -139,6 +139,10 @@
                 };
         };

+       cpufreq-dt {   //the node name must be cpufreq-dt
+               compatible = "rockchip,cpufreq";  //  the compatible name is
insignificant
+       };
+
Its not allowed to create a DT node for a dummy device and so we never
followed this way.

I have just sent a patchset and cc'd you:
"[PATCH 0/3] cpufreq: dt: Create platform device from generic code"

and so this patch shall get replaced now.


--
Finley