On Tue, Nov 16, 2021 at 01:58:14PM +0100, Alexander Stein wrote:
> After commit b4b844930f27 ("tty: serial: fsl_lpuart: drop earlycon entry
> for i.MX8QXP") earlycon support was essentially removed from
> imx8qm/imx8qxp due to missing compatible.
> The commit message says "i.MX8QXP lpuart is compatible with i.MX7ULP" so
> adding a fallback compatible should be fine.
> With this change earlycon is supported again on imx8qm/imx8qxp.
>
> Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
> Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
> ---
> Changes in v2:
> * Fix typo in commit message: 'early' -> 'earlycon'
>
> arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
> index bbe5f5ecfb92..3486b99ab6eb 100644
> --- a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
> @@ -19,19 +19,19 @@ uart4_lpcg: clock-controller@5a4a0000 {
> };
>
> &lpuart0 {
> - compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
> + compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart", "fsl,imx7ulp-lpuart";
Then fsl,imx8qxp-lpuart should be dropped?
Shawn
> };
>
> &lpuart1 {
> - compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
> + compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart", "fsl,imx7ulp-lpuart";
> };
>
> &lpuart2 {
> - compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
> + compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart", "fsl,imx7ulp-lpuart";
> };
>
> &lpuart3 {
> - compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
> + compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart", "fsl,imx7ulp-lpuart";
> };
>
> &i2c0 {
> --
> 2.25.1
>
