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Thu, 02 May 2024 09:53:30 -0700 (PDT) Message-ID: Date: Thu, 2 May 2024 18:53:28 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/3] drm/mediatek: Add support for OF graphs To: AngeloGioacchino Del Regno , chunkuang.hu@kernel.org Cc: robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, matthias.bgg@gmail.com, shawn.sung@mediatek.com, yu-chang.lee@mediatek.com, ck.hu@mediatek.com, jitao.shi@mediatek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, wenst@chromium.org, kernel@collabora.com References: <20240409120211.321153-1-angelogioacchino.delregno@collabora.com> <1fc23530-89ba-4e36-9e9a-a1289f56a9bc@baylibre.com> <608fdbde-ad06-45ec-9771-18aa9f002f2d@collabora.com> Content-Language: en-US From: Alexandre Mergnat In-Reply-To: <608fdbde-ad06-45ec-9771-18aa9f002f2d@collabora.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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@14000000 { 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@14001000 { @@ -801,6 +814,24 @@ ovl0: ovl@1400b000 { interrupts = ; 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@1400d000 { @@ -811,6 +842,24 @@ rdma0: rdma@1400d000 { 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@1400f000 { @@ -819,6 +868,24 @@ color0: color@1400f000 { clocks = <&mmsys CLK_MM_MM_DISP_COLOR0>; interrupts = ; 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@14010000 { @@ -827,6 +894,24 @@ ccorr0: ccorr@14010000 { clocks = <&mmsys CLK_MM_MM_DISP_CCORR0>; interrupts = ; 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@14011000 { @@ -835,6 +920,24 @@ aal0: aal@14011000 { clocks = <&mmsys CLK_MM_MM_DISP_AAL0>; interrupts = ; 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@14012000 { @@ -843,6 +946,24 @@ gamma0: gamma@14012000 { clocks = <&mmsys CLK_MM_MM_DISP_GAMMA0>; interrupts = ; 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@14013000 { @@ -851,6 +972,23 @@ dither0: dither@14013000 { clocks = <&mmsys CLK_MM_MM_DISP_DITHER0>; interrupts = ; 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@14014000 { @@ -874,6 +1012,23 @@ rdma1: rdma@14016000 { 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@14018000 { 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