Hi Geert,

Thank you for review!

On 10.07.2017 11:20, Geert Uytterhoeven wrote:
On Fri, Jul 7, 2017 at 4:09 AM, Vladimir Barinov
<[email protected]> wrote:
From: Vladimir Barinov <[email protected]>

This enables I2C4 for ULCB board

Signed-off-by: Vladimir Barinov <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>

--- a/arch/arm64/boot/dts/renesas/ulcb.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb.dtsi
@@ -189,6 +189,12 @@
         };
  };

+&i2c4 {
+       status = "okay";
+
+       clock-frequency = <400000>;
Is this a bus limitation, or a limitation for the VC6 that's added in a later
patch?
Yes, IDT VC5 clock generator supports up to 400kHz.

I've explicitly set 400kHz as default since the documentation says that the default value is 100kHz if 'clock-frequency' not set:
Documentation/devicetree/bindings/i2c/i2c-rcar.txt

Regards,
Vladimir

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