This is a note to let you know that I've just added the patch titled
arm64: dts: mediatek: mt8186: Add missing clocks to ssusb power domains
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-mediatek-mt8186-add-missing-clocks-to-ssus.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f7ed9b8a1804d0d838647f4567152b290e54f58f
Author: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Date: Tue Feb 13 10:02:37 2024 -0500
arm64: dts: mediatek: mt8186: Add missing clocks to ssusb power domains
[ Upstream commit a00d4a98af44e025891e97c490b2545368a25e08 ]
The ssusb power domains currently don't list any clocks, despite
depending on some, and thus rely on the bootloader leaving the required
clocks on in order to work.
When booting with the upstream arm64 defconfig, the power domain
controller will defer probe until modules have loaded since it has an
indirect dependency on CONFIG_MTK_CMDQ, which is configured as a module.
However at the point where modules are loaded, unused clocks are also
disabled, causing the ssusb domains to fail to be enabled and
consequently the controller to fail probe:
mtk-power-controller 10006000.syscon:power-controller: /soc/syscon@10006000/power-controller/power-domain@4: failed to power on domain: -110
mtk-power-controller: probe of 10006000.syscon:power-controller failed with error -110
Add the missing clocks for the ssusb power domains so that they can
successfully probe without relying on the bootloader state.
Fixes: d9e43c1e7a38 ("arm64: dts: mt8186: Add power domains controller")
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240213-mt8186-ssusb-domain-clk-fix-v2-1-1f981d35f3fd@xxxxxxxxxxxxx
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/mediatek/mt8186.dtsi b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
index ee0feadbf9619..4fd25f0f313d2 100644
--- a/arch/arm64/boot/dts/mediatek/mt8186.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186.dtsi
@@ -931,11 +931,17 @@ power-domain@MT8186_POWER_DOMAIN_CSIRX_TOP {
power-domain@MT8186_POWER_DOMAIN_SSUSB {
reg = <MT8186_POWER_DOMAIN_SSUSB>;
+ clocks = <&topckgen CLK_TOP_USB_TOP>,
+ <&infracfg_ao CLK_INFRA_AO_SSUSB_TOP_REF>;
+ clock-names = "sys_ck", "ref_ck";
#power-domain-cells = <0>;
};
power-domain@MT8186_POWER_DOMAIN_SSUSB_P1 {
reg = <MT8186_POWER_DOMAIN_SSUSB_P1>;
+ clocks = <&infracfg_ao CLK_INFRA_AO_SSUSB_TOP_P1_SYS>,
+ <&infracfg_ao CLK_INFRA_AO_SSUSB_TOP_P1_REF>;
+ clock-names = "sys_ck", "ref_ck";
#power-domain-cells = <0>;
};
