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I will follow up with you ASAP. 在 2025/12/2 16:29, Piotr Oniszczuk 写道: > [You don't often get email from piotr.oniszczuk@gmail.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] > > [ EXTERNAL EMAIL ] > > Ao, > Any chance for updated s4 hdmi series for 6.18? > > >> Wiadomość napisana przez Ao Xu w dniu 21 lis 2025, o godz. 03:55: >> >> Hi Piotr， >> >> I will check this issue >> >> 在 2025/11/19 18:27, Piotr Oniszczuk 写道: >>> [You don't often get email from piotr.oniszczuk@gmail.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] >>> >>> [ EXTERNAL EMAIL ] >>> >>> Pls see inline >>> >>>> Wiadomość napisana przez Chuan Liu w dniu 19 lis 2025, o godz. 03:57: >>>> >>>> Hi Piotr, >>>> >>>> >>>> On 11/18/2025 10:50 PM, Piotr Oniszczuk wrote: >>>>> [You don't often get email from piotr.oniszczuk@gmail.com. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] >>>>> [ EXTERNAL EMAIL ] >>>>> Ao, >>>>> Is there any chance to get this s4 drm hdmi series for current 6.18? >>>>> (i tried backport this series to 6.18 but have some issues with reparent vpu_0_sel to sysclk_b_sel) >>>> Why do we need to reparent vpu_0_sel to sysclk_b_sel? is there any >>>> background here? >>> Well - it looks it is because bug.... >>> Martin Blumenstingl had perfect eye and catch typo in patch https://lore.kernel.org/all/20250110-drm-s4-v1-11-cbc2d5edaae8@amlogic.com/: >>> >>> By replacing: >>> assigned-clock-parents = <&clkc_periphs CLKID_FCLK_DIV3>, >>> <0>, /* Do Nothing */ >>> <&clkc_periphs CLKID_VPU_0>, >>> <&clkc_periphs CLKID_FCLK_DIV4>, >>> <0>, /* Do Nothing */ >>> <&clkc_periphs CLKID_VAPB_0>; >>> >>> with: >>> assigned-clock-parents = <&clkc_pll CLKID_FCLK_DIV3>, >>> <0>, /* Do Nothing */ >>> <&clkc_periphs CLKID_VPU_0>, >>> <&clkc_pll CLKID_FCLK_DIV4>, >>> <0>, /* Do Nothing */ >>> <&clkc_periphs CLKID_VAPB_0>; >>> >>> dmesg is like this https://termbin.com/6020 >>> >>> So i'm getting hdmi working - but only when device boots _without_ connected hdmi at boot (and connected later) >>> If hdmi is connected at boot - boot hangs at: >>> >>> 0.341676] meson-dw-hdmi fe300000.hdmi-tx: Detected HDMI TX controller v2.01a with HDCP (meson_dw_hdmi_phy) >>> [ 0.342750] meson-dw-hdmi fe300000.hdmi-tx: registered DesignWare HDMI I2C bus driver >>> [ 0.343660] meson-drm ff000000.vpu: bound fe300000.hdmi-tx (ops meson_dw_hdmi_ops) >>> [ 0.344832] [drm] Initialized meson 1.0.0 for ff000000.vpu on minor 0 >>> >>> FYI: It is after applying https://patchwork.kernel.org/project/linux-amlogic/cover/20250110-drm-s4-v1-0-cbc2d5edaae8@amlogic.com/ on mainline 6.18 (with some my adjustments on this series required by changes in 6.18). >>> For VPU clk changes see https://github.com/warpme/minimyth2/blob/master/script/kernel/linux-6.18/files/0312-drm-meson-add-vpu-clk-setting-for-S4.patch >>> It is 6.18 adaptation of https://patchwork.kernel.org/project/linux-amlogic/patch/20250110-drm-s4-v1-9-cbc2d5edaae8@amlogic.com/ >>> >>> As kernel hangs - i have limited caps to drill where root cause is. >>> >>> Maybe above hang is reason of my backports or missing any pre-req required to get s4 drm working? >>> Anyway - it will be good to test with updated to 6.18 series of Add DRM support for Amlogic S4 (plus info about any pre-req required to get s4 drm working) >>> >>> >>>> The vpu_clk on S4 doesn't support sysclk_b_sel as one of its >>>> selectable clock sources, so this reparent operation will definitely >>>> fail. This has nothing to do with the kernel version. >>>> >>>>>> Wiadomość napisana przez Ao Xu via B4 Relay w dniu 10 sty 2025, o godz. 06:39: >>>>>> >>>>>> From: Ao Xu >>>>>> >>>>>> Add devicetree document for S4 HDMI controller >>>>>> >>>>>> Signed-off-by: Ao Xu >>>>>> --- >>>>>> Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml | 1 + >>>>>> 1 file changed, 1 insertion(+) >>>>>> >>>>>> diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml >>>>>> index 84d68b8cfccc86fd87a6a0fd2b70af12e51eb8a4..6e0a8369eee915fab55af24d450a6c40e08def38 100644 >>>>>> --- a/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml >>>>>> +++ b/Documentation/devicetree/bindings/display/amlogic,meson-dw-hdmi.yaml >>>>>> @@ -55,6 +55,7 @@ properties: >>>>>> - const: amlogic,meson-gx-dw-hdmi >>>>>> - enum: >>>>>> - amlogic,meson-g12a-dw-hdmi # G12A (S905X2, S905Y2, S905D2) >>>>>> + - amlogic,meson-s4-dw-hdmi # S4 (S905Y4) >>>>>> >>>>>> reg: >>>>>> maxItems: 1 >>>>>> >>>>>> -- >>>>>> 2.43.0 >>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> linux-amlogic mailing list >>>>>> linux-amlogic@lists.infradead.org >>>>>> http://lists.infradead.org/mailman/listinfo/linux-amlogic >>>>> _______________________________________________ >>>>> linux-amlogic mailing list >>>>> linux-amlogic@lists.infradead.org >>>>> http://lists.infradead.org/mailman/listinfo/linux-amlogic