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[v4,7/8] ARM: bcm2835: Tie SPI clock to the core clock rate.

Message ID 1437420787-32137-8-git-send-email-eric@anholt.net (mailing list archive)
State New, archived
Headers show

Commit Message

Eric Anholt July 20, 2015, 7:33 p.m. UTC 
We were previously using a fixed clock declared in the 2835 DT, but
it's actually the core clock, and it might not be the same if you had
adjusted it using the firmware's config.txt.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
---
 arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Lee Jones July 24, 2015, 3:23 p.m. UTC | #1 
On Mon, 20 Jul 2015, Eric Anholt wrote:

> We were previously using a fixed clock declared in the 2835 DT, but
> it's actually the core clock, and it might not be the same if you had
> adjusted it using the firmware's config.txt.
> 
> Signed-off-by: Eric Anholt <eric@anholt.net>
> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
> ---
>  arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)

For my own reference:
 Acked-by: Lee Jones <lee@kernel.org>

> diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
> index 9549eb8..0a32123 100644
> --- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
> +++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
> @@ -69,3 +69,7 @@
>  		 <&firmware_clocks RPI_CLOCK_CORE>;
>  	clock-names = "uartclk", "apb_pclk";
>  };
> +
> +&spi {
> +	clocks = <&firmware_clocks RPI_CLOCK_CORE>;
> +};
diff mbox

Patch

diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index 9549eb8..0a32123 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
@@ -69,3 +69,7 @@ 
 		 <&firmware_clocks RPI_CLOCK_CORE>;
 	clock-names = "uartclk", "apb_pclk";
 };
+
+&spi {
+	clocks = <&firmware_clocks RPI_CLOCK_CORE>;
+};