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: https://lore.kernel.org/all/fcd6acc268b8642371cf289149b2b1c3e90c7f45.camel@xxxxxxxxxxxxxx/
Link: https://lore.kernel.org/all/20240418155151.355133-1-ivitro@xxxxxxxxx/
Suggested-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Vitor Soares <vitor.soares@xxxxxxxxxxx>
---
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
