CC Mike, Stephen, linux-clk
On Wed, Apr 6, 2016 at 2:52 PM, Sjoerd Simons
<sjoerd.simons@xxxxxxxxxxxxxxx> wrote:
> clk_get on a disabled clock node will return EPROBE_DEFER, which can
> cause drivers to be deferred forever if such clocks are referenced in
> their clocks property.
Is this a side effect of commit 3e5dd6f6e690048d ("clk: Ignore disabled DT
clock providers")?
> Update the various disabled external clock nodes to default to a
> frequency of 0, but don't disable them to prevent this.
>
> Signed-off-by: Sjoerd Simons <sjoerd.simons@xxxxxxxxxxxxxxx>
>
> ---
>
> arch/arm/boot/dts/r8a7791-koelsch.dts | 1 +
> arch/arm/boot/dts/r8a7791-porter.dts | 1 +
> arch/arm/boot/dts/r8a7791.dtsi | 5 +----
> 3 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
> index 1adf877..da59c28 100644
> --- a/arch/arm/boot/dts/r8a7791-koelsch.dts
> +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
> @@ -660,6 +660,7 @@
> };
>
> &pcie_bus_clk {
> + clock-frequency = <100000000>;
> status = "okay";
> };
>
> diff --git a/arch/arm/boot/dts/r8a7791-porter.dts b/arch/arm/boot/dts/r8a7791-porter.dts
> index 9554d13..19b257e 100644
> --- a/arch/arm/boot/dts/r8a7791-porter.dts
> +++ b/arch/arm/boot/dts/r8a7791-porter.dts
> @@ -413,6 +413,7 @@
> };
>
> &pcie_bus_clk {
> + clock-frequency = <100000000>;
> status = "okay";
> };
>
> diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
> index 8693888..676df63 100644
> --- a/arch/arm/boot/dts/r8a7791.dtsi
> +++ b/arch/arm/boot/dts/r8a7791.dtsi
> @@ -1104,8 +1104,7 @@
> pcie_bus_clk: pcie_bus {
> compatible = "fixed-clock";
> #clock-cells = <0>;
> - clock-frequency = <100000000>;
> - status = "disabled";
> + clock-frequency = <0>;
> };
>
> /* External SCIF clock */
> @@ -1114,7 +1113,6 @@
> #clock-cells = <0>;
> /* This value must be overridden by the board. */
> clock-frequency = <0>;
> - status = "disabled";
> };
>
> /* External USB clock - can be overridden by the board */
> @@ -1130,7 +1128,6 @@
> #clock-cells = <0>;
> /* This value must be overridden by the board. */
> clock-frequency = <0>;
> - status = "disabled";
> };
>
> /* Special CPG clocks */
> --
> 2.8.0.rc3
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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