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Message-ID: <2f7ded8d-7fbb-421e-af3f-885af2da1687@collabora.com>
Date: Tue, 14 May 2024 14:00:00 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Alexandre Mergnat <amergnat@...libre.com>, chunkuang.hu@...nel.org
Cc: robh@...nel.org, krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
p.zabel@...gutronix.de, airlied@...il.com, daniel@...ll.ch,
maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de,
matthias.bgg@...il.com, shawn.sung@...iatek.com, yu-chang.lee@...iatek.com,
ck.hu@...iatek.com, jitao.shi@...iatek.com, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-mediatek@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
wenst@...omium.org, kernel@...labora.com
Subject: Re: [PATCH v2 0/3] drm/mediatek: Add support for OF graphs
Il 14/05/24 11:46, Alexandre Mergnat ha scritto:
> Hi Angelo,
>
> Gentle ping because I'm stuck if I rebase my serie on top of yours.
>
Sorry, I was unable to find time to get back to this... I plan to look at it
between today and tomorrow.
In the meanwhile - does your platform use OVL_ADAPTOR?
If it does, that's the actual issue; otherwise, there may be some mistake on
your side, because the EPs' ports<->ids relationship was verified before sending
this to the lists.
Cheers,
Angelo
> On 02/05/2024 18:53, Alexandre Mergnat wrote:
>>
>>
>> On 30/04/2024 13:33, AngeloGioacchino Del Regno wrote:
>>> Il 30/04/24 12:17, Alexandre Mergnat ha scritto:
>>>> Hi Angelo,
>>>>
>>>> On 09/04/2024 14:02, AngeloGioacchino Del Regno wrote:
>>>>> This series was tested on MT8195 Cherry Tomato and on MT8395 Radxa
>>>>> NIO-12L with both hardcoded paths, OF graph support and partially
>>>>> hardcoded paths (meaning main display through OF graph and external
>>>>> display hardcoded, because of OVL_ADAPTOR).
>>>>
>>>> Is that make sense for you to add the DTS changes of these boards into this
>>>> serie ?
>>>> I asked because, IMHO, that could help to understand the serie.
>>>>
>>>
>>> Yes and no... but I imagine that you're asking this because you're trying to
>>> prepare something with a different SoC+board(s) combination :-)
>>>
>>> In that case, I'm preventively sorry because what follows here is not 100%
>>> perfectly tidy yet as I didn't mean to send the devicetree commits upstream
>>> before this series got picked....
>>>
>>> ... but there you go - I'm sure that you won't mind and that the example will
>>> be more than good enough for you.
>>>
>>> Please note that one of the reasons why I didn't want to add this to the series
>>> is that the following changes show only a mere 50% of the reasons why we want OF
>>> graph support on mediatek-drm (but mainly, it's because I didn't have time to
>>> actually rebase etc :-P )
>>
>> Thanks for the explanations and examples.
>> Unfortunately, I have 2 display but only one is working (the main: DSI0) when I
>> use the dts method.
>> I've probably missed something but I don't know what.
>>
>> In my "mmsys" node, if I swap display (the ext endpoint with the main endpoint),
>> the DPI0 is working, but not the DSI0. I conclude my both paths are good.
>>
>> Then, I've put some trace into "mtk_drm_of_ddp_path_build" to check if it parse
>> the two endpoint of the node. Both are parsed, but "of_ep.port" is always = 0.
>> According to "of_graph_parse_endpoint" function, "port" is the value of the
>> parent "reg", whereas "id" is the value of the endpoint "reg".
>> So I replaced "of_ep.port" by "of_ep.id". Now I've of_ep.id = 0 for main and
>> of_ep.id = 1 for EXT.
>>
>> Now I've the good CRTC path, I get this error:
>> mediatek-drm mediatek-drm.1.auto: Invalid display hw pipeline. Last component:
>> 54 (ret=-2)
>> mediatek-drm mediatek-drm.1.auto: probe with driver mediatek-drm failed with
>> error -22
>>
>> After quick look, the "cpath" into "mtk_drm_of_ddp_path_build_one" (or deeper
>> functions) seems not be used as it should, due to the previous "of_ep.port" =>
>> "of_ep.id" change of course.
>>
>> But I probably have to fix "of_ep.port" because I've mis-coded something. Just in
>> case, I share you my diff:
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> index 1aa3426f561b..f660481d3fe8 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> +++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
>> @@ -109,15 +109,51 @@ vsys_lcm_reg: regulator-vsys-lcm {
>> };
>> };
>>
>> +&cpu0 {
>> + proc-supply = <&mt6357_vproc_reg>;
>> + sram-supply = <&mt6357_vsram_proc_reg>;
>> +};
>> +
>> +&cpu1 {
>> + proc-supply = <&mt6357_vproc_reg>;
>> + sram-supply = <&mt6357_vsram_proc_reg>;
>> +};
>> +
>> +&cpu2 {
>> + proc-supply = <&mt6357_vproc_reg>;
>> + sram-supply = <&mt6357_vsram_proc_reg>;
>> +};
>> +
>> +&cpu3 {
>> + proc-supply = <&mt6357_vproc_reg>;
>> + sram-supply = <&mt6357_vsram_proc_reg>;
>> +};
>> +
>> +&dither0_out {
>> + remote-endpoint = <&dsi0_in>;
>> +};
>> +
>> &dpi0 {
>> pinctrl-0 = <&dpi_default_pins>;
>> pinctrl-1 = <&dpi_idle_pins>;
>> pinctrl-names = "default", "sleep";
>> status = "okay";
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>>
>> - port {
>> - dpi_out: endpoint {
>> - remote-endpoint = <&it66121_in>;
>> + port@0 {
>> + reg = <0>;
>> + dpi0_in: endpoint {
>> + remote-endpoint = <&rdma1_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + dpi0_out: endpoint {
>> + remote-endpoint = <&it66121_in>;
>> + };
>> };
>> };
>> };
>> @@ -137,36 +173,28 @@ panel@0 {
>>
>> port {
>> panel_in: endpoint {
>> - remote-endpoint = <&dsi_out>;
>> + remote-endpoint = <&dsi0_out>;
>> };
>> };
>> };
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>>
>> - port {
>> - dsi_out: endpoint {
>> - remote-endpoint = <&panel_in>;
>> + port@0 {
>> + reg = <0>;
>> + dsi0_in: endpoint {
>> + remote-endpoint = <&dither0_out>;
>> + };
>> };
>> - };
>> -};
>>
>> -&cpu0 {
>> - proc-supply = <&mt6357_vproc_reg>;
>> - sram-supply = <&mt6357_vsram_proc_reg>;
>> -};
>> -
>> -&cpu1 {
>> - proc-supply = <&mt6357_vproc_reg>;
>> - sram-supply = <&mt6357_vsram_proc_reg>;
>> -};
>> -
>> -&cpu2 {
>> - proc-supply = <&mt6357_vproc_reg>;
>> - sram-supply = <&mt6357_vsram_proc_reg>;
>> -};
>> -
>> -&cpu3 {
>> - proc-supply = <&mt6357_vproc_reg>;
>> - sram-supply = <&mt6357_vsram_proc_reg>;
>> + port@1 {
>> + reg = <1>;
>> + dsi0_out: endpoint {
>> + remote-endpoint = <&panel_in>;
>> + };
>> + };
>> + };
>> };
>>
>> ðernet {
>> @@ -229,7 +257,7 @@ port@0 {
>> reg = <0>;
>> it66121_in: endpoint {
>> bus-width = <12>;
>> - remote-endpoint = <&dpi_out>;
>> + remote-endpoint = <&dpi0_out>;
>> };
>> };
>>
>> @@ -557,6 +585,10 @@ &pwm {
>> status = "okay";
>> };
>>
>> +&rdma1_out {
>> + remote-endpoint = <&dpi0_in>;
>> +};
>> +
>> &ssusb {
>> dr_mode = "otg";
>> maximum-speed = "high-speed";
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
>> b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
>> index d34519a33c90..dbb559959a9d 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
>> @@ -762,6 +762,19 @@ mmsys: syscon@...00000 {
>> compatible = "mediatek,mt8365-mmsys", "syscon";
>> reg = <0 0x14000000 0 0x1000>;
>> #clock-cells = <1>;
>> + port {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + mmsys_main: endpoint@0 {
>> + reg = <0>;
>> + remote-endpoint = <&ovl0_in>;
>> + };
>> + mmsys_ext: endpoint@1 {
>> + reg = <1>;
>> + remote-endpoint = <&rdma1_in>;
>> + };
>> + };
>> };
>>
>> mutex: mutex@...01000 {
>> @@ -801,6 +814,24 @@ ovl0: ovl@...0b000 {
>> interrupts = <GIC_SPI 161 IRQ_TYPE_LEVEL_LOW>;
>> iommus = <&iommu M4U_PORT_DISP_OVL0>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + ovl0_in: endpoint {
>> + remote-endpoint = <&mmsys_main>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + ovl0_out: endpoint {
>> + remote-endpoint = <&rdma0_in>;
>> + };
>> + };
>> + };
>> };
>>
>> rdma0: rdma@...0d000 {
>> @@ -811,6 +842,24 @@ rdma0: rdma@...0d000 {
>> iommus = <&iommu M4U_PORT_DISP_RDMA0>;
>> mediatek,rdma-fifo-size = <5120>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + rdma0_in: endpoint {
>> + remote-endpoint = <&ovl0_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + rdma0_out: endpoint {
>> + remote-endpoint = <&color0_in>;
>> + };
>> + };
>> + };
>> };
>>
>> color0: color@...0f000 {
>> @@ -819,6 +868,24 @@ color0: color@...0f000 {
>> clocks = <&mmsys CLK_MM_MM_DISP_COLOR0>;
>> interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_LOW>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + color0_in: endpoint {
>> + remote-endpoint = <&rdma0_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + color0_out: endpoint {
>> + remote-endpoint = <&ccorr0_in>;
>> + };
>> + };
>> + };
>> };
>>
>> ccorr0: ccorr@...10000 {
>> @@ -827,6 +894,24 @@ ccorr0: ccorr@...10000 {
>> clocks = <&mmsys CLK_MM_MM_DISP_CCORR0>;
>> interrupts = <GIC_SPI 165 IRQ_TYPE_LEVEL_LOW>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + ccorr0_in: endpoint {
>> + remote-endpoint = <&color0_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + ccorr0_out: endpoint {
>> + remote-endpoint = <&aal0_in>;
>> + };
>> + };
>> + };
>> };
>>
>> aal0: aal@...11000 {
>> @@ -835,6 +920,24 @@ aal0: aal@...11000 {
>> clocks = <&mmsys CLK_MM_MM_DISP_AAL0>;
>> interrupts = <GIC_SPI 166 IRQ_TYPE_LEVEL_LOW>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + aal0_in: endpoint {
>> + remote-endpoint = <&ccorr0_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + aal0_out: endpoint {
>> + remote-endpoint = <&gamma0_in>;
>> + };
>> + };
>> + };
>> };
>>
>> gamma0: gamma@...12000 {
>> @@ -843,6 +946,24 @@ gamma0: gamma@...12000 {
>> clocks = <&mmsys CLK_MM_MM_DISP_GAMMA0>;
>> interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_LOW>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + gamma0_in: endpoint {
>> + remote-endpoint = <&aal0_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + gamma0_out: endpoint {
>> + remote-endpoint = <&dither0_in>;
>> + };
>> + };
>> + };
>> };
>>
>> dither0: dither@...13000 {
>> @@ -851,6 +972,23 @@ dither0: dither@...13000 {
>> clocks = <&mmsys CLK_MM_MM_DISP_DITHER0>;
>> interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_LOW>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + dither0_in: endpoint {
>> + remote-endpoint = <&gamma0_out>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + dither0_out: endpoint {
>> + };
>> + };
>> + };
>> };
>>
>> dsi0: dsi@...14000 {
>> @@ -874,6 +1012,23 @@ rdma1: rdma@...16000 {
>> iommus = <&iommu M4U_PORT_DISP_RDMA1>;
>> mediatek,rdma-fifo-size = <2048>;
>> power-domains = <&spm MT8365_POWER_DOMAIN_MM>;
>> + ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port@0 {
>> + reg = <0>;
>> + rdma1_in: endpoint {
>> + remote-endpoint = <&mmsys_ext>;
>> + };
>> + };
>> +
>> + port@1 {
>> + reg = <1>;
>> + rdma1_out: endpoint {
>> + };
>> + };
>> + };
>> };
>>
>> dpi0: dpi@...18000 {
>> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> index dacf4eaa3457..5992b7865310 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
>> @@ -230,22 +230,6 @@ static const unsigned int mt8195_mtk_ddp_ext[] = {
>> DDP_COMPONENT_DP_INTF1,
>> };
>>
>> -static const unsigned int mt8365_mtk_ddp_main[] = {
>> - DDP_COMPONENT_OVL0,
>> - DDP_COMPONENT_RDMA0,
>> - DDP_COMPONENT_COLOR0,
>> - DDP_COMPONENT_CCORR,
>> - DDP_COMPONENT_AAL0,
>> - DDP_COMPONENT_GAMMA,
>> - DDP_COMPONENT_DITHER0,
>> - DDP_COMPONENT_DSI0,
>> -};
>> -
>> -static const unsigned int mt8365_mtk_ddp_ext[] = {
>> - DDP_COMPONENT_RDMA1,
>> - DDP_COMPONENT_DPI0,
>> -};
>> -
>> static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
>> .main_path = mt2701_mtk_ddp_main,
>> .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main),
>> @@ -334,10 +318,6 @@ static const struct mtk_mmsys_driver_data
>> mt8195_vdosys1_driver_data = {
>> };
>>
>> static const struct mtk_mmsys_driver_data mt8365_mmsys_driver_data = {
>> - .main_path = mt8365_mtk_ddp_main,
>> - .main_len = ARRAY_SIZE(mt8365_mtk_ddp_main),
>> - .ext_path = mt8365_mtk_ddp_ext,
>> - .ext_len = ARRAY_SIZE(mt8365_mtk_ddp_ext),
>> .mmsys_dev_num = 1,
>> };
>>
>>
>>
>> --
>> Regards,
>> Alexandre
>
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