> Subject: [PATCH v1] arm64: dts: imx8mp: Fix VPU PGC power-domain
> parents
>
> From: Vitor Soares <vitor.soares@xxxxxxxxxxx>
>
> On iMX8M Plus QuadLite (VPU-less SoC), the dependency between
> VPU power domains lead to a deferred probe error during boot:
> [ 17.140195] imx-pgc imx-pgc-domain.8: failed to command PGC
> [ 17.147183] platform imx-pgc-domain.11: deferred probe pending:
> (reason unknown)
> [ 17.147200] platform imx-pgc-domain.12: deferred probe pending:
> (reason unknown)
> [ 17.147207] platform imx-pgc-domain.13: deferred probe pending:
> (reason unknown)
>
> This is incorrect and should be the VPU blk-ctrl controlling these power
> domains, which is already doing it.
>
> After removing the `power-domain` property from the VPU PGC nodes,
> both iMX8M Plus w/ and w/out VPU boot correctly. However, it breaks
> the suspend/resume functionality. A fix for this is pending, see Links.
>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Fixes: df680992dd62 ("arm64: dts: imx8mp: add vpu pgc nodes")
> Link:
> Suggested-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Signed-off-by: Vitor Soares <vitor.soares@xxxxxxxxxxx>
For VPU-Less 8MP, all the VPU PGC nodes should be dropped,
right?
Why not use bootloader to update the device tree based on fuse
settings?
Regards,
Peng.
> ---
> arch/arm64/boot/dts/freescale/imx8mp.dtsi | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index b92abb5a5c53..12548336b736 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -882,21 +882,18 @@ pgc_vpumix: power-domain@19 {
>
> pgc_vpu_g1: power-
> domain@20 {
> #power-domain-
> cells = <0>;
> - power-domains =
> <&pgc_vpumix>;
> reg =
> <IMX8MP_POWER_DOMAIN_VPU_G1>;
> clocks = <&clk
> IMX8MP_CLK_VPU_G1_ROOT>;
> };
>
> pgc_vpu_g2: power-
> domain@21 {
> #power-domain-
> cells = <0>;
> - power-domains =
> <&pgc_vpumix>;
> reg =
> <IMX8MP_POWER_DOMAIN_VPU_G2>;
> clocks = <&clk
> IMX8MP_CLK_VPU_G2_ROOT>;
> };
>
> pgc_vpu_vc8000e: power-
> domain@22 {
> #power-domain-
> cells = <0>;
> - power-domains =
> <&pgc_vpumix>;
> reg =
> <IMX8MP_POWER_DOMAIN_VPU_VC8000E>;
> clocks = <&clk
> IMX8MP_CLK_VPU_VC8KE_ROOT>;
> };
> --
> 2.34.1
