Hi Eugeniu,
Thank you for the patch,
On 12/08/18 14:31, Eugeniu Rosca wrote:
> According to R-Car Gen3 HW manual rev1.00, R-Car M3-N has two CAN
> interfaces, similar to H3, M3-W and other SoCs from the same family.
>
> Add CAN placeholder nodes to avoid below DTC errors:
> Error: arch/arm64/boot/dts/renesas/ulcb-kf.dtsi:19.1-6 Label or path can0 not found
> Error: arch/arm64/boot/dts/renesas/ulcb-kf.dtsi:25.1-6 Label or path can1 not found
>
> These errors occur *after* the addition of r8a77965-m3nulcb-kf.dts.
> Fix them beforehand.
>
> CAN support is inspired from below commits:
> - v4.7 commit 308b7e4ba62e ("arm64: dts: r8a7795: Add CAN support")
> - v4.11 commit 909c16252415 ("arm64: dts: r8a7796: Add CAN support")
> - v4.12 commit bec0948e810f ("arm64: dts: r8a7796: Add reset control properties")
>
> Signed-off-by: Eugeniu Rosca <erosca@xxxxxxxxxxxxxx>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> ---
> Changes in v2:
> - [Kieran Bingham] Improved commit description:
> - Referenced the newer HW manual rev1.00 instead of rev0.55E.
> - Kept the "true story" behind the patch. Just made it more clear.
> - [Geert Uytterhoeven] Replaced CAN0 and CAN1 nodes with placeholders
> (no CAN testing was done to validate the DTS configuration).
> ---
> arch/arm64/boot/dts/renesas/r8a77965.dtsi | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
> index 486aecacb22a..4da479d3c226 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
> @@ -656,6 +656,22 @@
> status = "disabled";
> };
>
> + can0: can@e6c30000 {
> + compatible = "renesas,can-r8a77965",
> + "renesas,rcar-gen3-can";
> + reg = <0 0xe6c30000 0 0x1000>;
> + /* placeholder */
> + status = "disabled";
> + };
This is probably more detail than is needed for a placeholder, but it
looks correct so I think this is fine.
--
Kieran
> +
> + can1: can@e6c38000 {
> + compatible = "renesas,can-r8a77965",
> + "renesas,rcar-gen3-can";
> + reg = <0 0xe6c38000 0 0x1000>;
> + /* placeholder */
> + status = "disabled";
> + };
> +
> pwm0: pwm@e6e30000 {
> compatible = "renesas,pwm-r8a77965", "renesas,pwm-rcar";
> reg = <0 0xe6e30000 0 8>;
>
