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* [RFC, v3, 0/4] media: mediatek: support mdp3 on mt8183 platform
@ 2019-09-11  9:34 Bibby Hsieh
  2019-09-11  9:34 ` [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings Bibby Hsieh
  0 siblings, 1 reply; 4+ messages in thread
From: Bibby Hsieh @ 2019-09-11  9:34 UTC (permalink / raw)
  To: hans.verkuil, laurent.pinchart+renesas, tfiga, matthias.bgg, mchehab
  Cc: yuzhao, zwisler, linux-mediatek, linux-arm-kernel, Sean.Cheng,
	sj.huang, christie.yu, holmes.chiou, frederic.chen,
	Jerry-ch.Chen, jungo.lin, Rynn.Wu, linux-media, srv_heupstream,
	devicetree, Daoyuan.Huang, daoyuan huang

From: daoyuan huang <daoyuan.huang@mediatek.com>

Changes since v2:
- modify code for review comment from Tomasz Figa & Alexandre Courbot
- review comment from Rob Hering will offer code revision in v4, due to
  it's related to device node modification, will need to modify code
  architecture

Changes since v1:
- modify code for CMDQ v3 API support
- EC ipi cmd migration
- fix compliance test fail item (m2m cmd with -f)
due to there is two problem in runing all format(-f) cmd:
1. out of memory before test complete
        Due to capture buffer mmap (refcount + 1) after reqbuf but seems
        no corresponding munmap called before device close.
        There are total 12XX items(formats) in format test and each format
        alloc 8 capture/output buffers.
2. unceasingly captureBufs() (randomly)
        Seems the break statement didn't catch the count == 0 situation:
        In v4l2-test-buffers.cpp, function: captureBufs()
                        ...
                        count--;
                        if (!node->is_m2m && !count)
                                break;
        Log is as attachment

I will paste the test result with problem part in another e-mail

Hi,

This is the first version of RFC patch for Media Data Path 3 (MDP3),
MDP3 is used for scaling and color format conversion.
support using GCE to write register in critical time limitation.
support V4L2 m2m device control.

Ping-Hsun Wu (1):
  dts: arm64: mt8183: Add Mediatek MDP3 nodes

daoyuan huang (3):
  dt-binding: mt8183: Add Mediatek MDP3 dt-bindings
  media: platform: Add Mediatek MDP3 driver KConfig
  media: platform: mtk-mdp3: Add Mediatek MDP3 driver

 .../bindings/media/mediatek,mt8183-mdp3.txt   |  201 +++
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      |  137 ++
 drivers/media/platform/Kconfig                |   19 +
 drivers/media/platform/Makefile               |    1 +
 drivers/media/platform/mtk-mdp3/Makefile      |    7 +
 drivers/media/platform/mtk-mdp3/isp_reg.h     |   37 +
 .../media/platform/mtk-mdp3/mdp-platform.h    |   58 +
 .../media/platform/mtk-mdp3/mdp_reg_ccorr.h   |   75 +
 .../media/platform/mtk-mdp3/mdp_reg_rdma.h    |  206 +++
 drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h |  109 ++
 .../media/platform/mtk-mdp3/mdp_reg_wdma.h    |  125 ++
 .../media/platform/mtk-mdp3/mdp_reg_wrot.h    |  115 ++
 .../media/platform/mtk-mdp3/mmsys_config.h    |  188 +++
 drivers/media/platform/mtk-mdp3/mmsys_mutex.h |   35 +
 .../media/platform/mtk-mdp3/mmsys_reg_base.h  |   38 +
 drivers/media/platform/mtk-mdp3/mtk-img-ipi.h |  270 ++++
 .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.c   |  504 +++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-cmdq.h   |   54 +
 .../media/platform/mtk-mdp3/mtk-mdp3-comp.c   | 1328 +++++++++++++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-comp.h   |  155 ++
 .../media/platform/mtk-mdp3/mtk-mdp3-core.c   |  277 ++++
 .../media/platform/mtk-mdp3/mtk-mdp3-core.h   |   84 ++
 .../media/platform/mtk-mdp3/mtk-mdp3-m2m.c    |  816 ++++++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-m2m.h    |   42 +
 .../media/platform/mtk-mdp3/mtk-mdp3-regs.c   |  739 +++++++++
 .../media/platform/mtk-mdp3/mtk-mdp3-regs.h   |  375 +++++
 .../media/platform/mtk-mdp3/mtk-mdp3-vpu.c    |  313 ++++
 .../media/platform/mtk-mdp3/mtk-mdp3-vpu.h    |   81 +
 28 files changed, 6389 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
 create mode 100644 drivers/media/platform/mtk-mdp3/Makefile
 create mode 100644 drivers/media/platform/mtk-mdp3/isp_reg.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp-platform.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_ccorr.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rdma.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_rsz.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_wdma.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mdp_reg_wrot.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mmsys_config.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mmsys_mutex.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mmsys_reg_base.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-img-ipi.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-comp.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-core.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-core.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-m2m.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-m2m.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-regs.h
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-vpu.c
 create mode 100644 drivers/media/platform/mtk-mdp3/mtk-mdp3-vpu.h

-- 
2.18.0


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings
  2019-09-11  9:34 [RFC, v3, 0/4] media: mediatek: support mdp3 on mt8183 platform Bibby Hsieh
@ 2019-09-11  9:34 ` Bibby Hsieh
  2019-09-12  1:29   ` CK Hu
  2019-09-17 19:14   ` Rob Herring
  0 siblings, 2 replies; 4+ messages in thread
From: Bibby Hsieh @ 2019-09-11  9:34 UTC (permalink / raw)
  To: hans.verkuil, laurent.pinchart+renesas, tfiga, matthias.bgg, mchehab
  Cc: yuzhao, zwisler, linux-mediatek, linux-arm-kernel, Sean.Cheng,
	sj.huang, christie.yu, holmes.chiou, frederic.chen,
	Jerry-ch.Chen, jungo.lin, Rynn.Wu, linux-media, srv_heupstream,
	devicetree, Daoyuan.Huang, daoyuan huang, Ping-Hsun Wu

From: daoyuan huang <daoyuan.huang@mediatek.com>

This patch adds DT binding document for Media Data Path 3 (MDP3)
a unit in multimedia system used for scaling and color format convert.

Signed-off-by: Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
Signed-off-by: daoyuan huang <daoyuan.huang@mediatek.com>
---
 .../bindings/media/mediatek,mt8183-mdp3.txt   | 201 ++++++++++++++++++
 1 file changed, 201 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt

diff --git a/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt b/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
new file mode 100644
index 000000000000..0d15326d12c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
@@ -0,0 +1,201 @@
+* Mediatek Media Data Path 3
+
+Media Data Path 3 (MDP3) is used for scaling and color space conversion.
+
+Required properties (controller node):
+- compatible: "mediatek,mt8183-mdp"
+- mediatek,scp: the node of system control processor (SCP), using the
+  remoteproc & rpmsg framework, see
+  Documentation/devicetree/bindings/remoteproc/mtk,scp.txt for details.
+- mediatek,mmsys: the node of mux(multiplexer) controller for HW connections.
+- mediatek,mm-mutex: the node of sof(start of frame) signal controller.
+- mediatek,mailbox-gce: the node of global command engine (GCE), used to
+  read/write registers with critical time limitation, see
+  Documentation/devicetree/bindings/mailbox/mtk-gce.txt for details.
+- mboxes: mailbox number used to communicate with GCE.
+- gce-subsys: sub-system id corresponding to the register address.
+- gce-event-names: in use event name list, used to correspond to event IDs.
+- gce-events: in use event IDs list, all IDs are defined in
+  'dt-bindings/gce/mt8183-gce.h'.
+
+Required properties (all function blocks, child node):
+- compatible: Should be one of
+        "mediatek,mt8183-mdp-rdma"  - read DMA
+        "mediatek,mt8183-mdp-rsz"   - resizer
+        "mediatek,mt8183-mdp-wdma"  - write DMA
+        "mediatek,mt8183-mdp-wrot"  - write DMA with rotation
+        "mediatek,mt8183-mdp-ccorr" - color correction with 3X3 matrix
+- reg: Physical base address and length of the function block register space
+- clocks: device clocks, see
+  Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
+- power-domains: a phandle to the power domain, see
+  Documentation/devicetree/bindings/power/power_domain.txt for details.
+- mediatek,mdp-id: HW index to distinguish same functionality modules.
+
+Required properties (DMA function blocks, child node):
+- compatible: Should be one of
+        "mediatek,mt8183-mdp-rdma"
+        "mediatek,mt8183-mdp-wdma"
+        "mediatek,mt8183-mdp-wrot"
+- iommus: should point to the respective IOMMU block with master port as
+  argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
+  for details.
+- mediatek,larb: must contain the local arbiters in the current Socs, see
+  Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt
+  for details.
+
+Required properties (input path selection node):
+- compatible:
+        "mediatek,mt8183-mdp-dl"    - MDP direct link input source selection
+- reg: Physical base address and length of the function block register space
+- clocks: device clocks, see
+  Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
+- mediatek,mdp-id: HW index to distinguish same functionality modules.
+
+Required properties (ISP PASS2 (DIP) module path selection node):
+- compatible:
+        "mediatek,mt8183-mdp-imgi"  - input DMA of ISP PASS2 (DIP) module for raw image input
+- reg: Physical base address and length of the function block register space
+- mediatek,mdp-id: HW index to distinguish same functionality modules.
+
+Required properties (SW node):
+- compatible: Should be one of
+        "mediatek,mt8183-mdp-exto"  - output DMA of ISP PASS2 (DIP) module for yuv image output
+        "mediatek,mt8183-mdp-path"  - MDP output path selection
+- mediatek,mdp-id: HW index to distinguish same functionality modules.
+
+Example:
+		mdp_camin@14000000 {
+			compatible = "mediatek,mt8183-mdp-dl";
+			mediatek,mdp-id = <0>;
+			reg = <0 0x14000000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
+			clocks = <&mmsys CLK_MM_MDP_DL_TXCK>,
+				<&mmsys CLK_MM_MDP_DL_RX>;
+		};
+
+		mdp_camin2@14000000 {
+			compatible = "mediatek,mt8183-mdp-dl";
+			mediatek,mdp-id = <1>;
+			reg = <0 0x14000000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
+			clocks = <&mmsys CLK_MM_IPU_DL_TXCK>,
+				<&mmsys CLK_MM_IPU_DL_RX>;
+		};
+
+		mdp_rdma0: mdp_rdma0@14001000 {
+			compatible = "mediatek,mt8183-mdp-rdma",
+				     "mediatek,mt8183-mdp3";
+			mediatek,scp = <&scp>;
+			mediatek,mdp-id = <0>;
+			reg = <0 0x14001000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x1000 0x1000>;
+			power-domains = <&scpsys MT8183_POWER_DOMAIN_DISP>;
+			clocks = <&mmsys CLK_MM_MDP_RDMA0>,
+				<&mmsys CLK_MM_MDP_RSZ1>;
+			iommus = <&iommu M4U_PORT_MDP_RDMA0>;
+			mediatek,larb = <&larb0>;
+			mediatek,mmsys = <&mmsys>;
+			mediatek,mm-mutex = <&mutex>;
+			mediatek,mailbox-gce = <&gce>;
+			mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST 0>,
+				<&gce 21 CMDQ_THR_PRIO_LOWEST 0>,
+				<&gce 22 CMDQ_THR_PRIO_LOWEST 0>,
+				<&gce 23 CMDQ_THR_PRIO_LOWEST 0>;
+			gce-subsys = <&gce 0x14000000 SUBSYS_1400XXXX>,
+				<&gce 0x14010000 SUBSYS_1401XXXX>,
+				<&gce 0x14020000 SUBSYS_1402XXXX>,
+				<&gce 0x15020000 SUBSYS_1502XXXX>;
+			mediatek,gce-events = <CMDQ_EVENT_MDP_RDMA0_SOF>,
+				<CMDQ_EVENT_MDP_RDMA0_EOF>,
+				<CMDQ_EVENT_MDP_RSZ0_SOF>,
+				<CMDQ_EVENT_MDP_RSZ1_SOF>,
+				<CMDQ_EVENT_MDP_TDSHP_SOF>,
+				<CMDQ_EVENT_MDP_WROT0_SOF>,
+				<CMDQ_EVENT_MDP_WROT0_EOF>,
+				<CMDQ_EVENT_MDP_WDMA0_SOF>,
+				<CMDQ_EVENT_MDP_WDMA0_EOF>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_0>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_1>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_2>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_3>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_4>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_5>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_6>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_7>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_8>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_9>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_10>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_11>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_12>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_13>,
+				<CMDQ_EVENT_ISP_FRAME_DONE_P2_14>,
+				<CMDQ_EVENT_WPE_A_DONE>,
+				<CMDQ_EVENT_SPE_B_DONE>;
+		};
+
+		mdp_imgi@15020000 {
+			compatible = "mediatek,mt8183-mdp-imgi";
+			mediatek,mdp-id = <0>;
+			reg = <0 0x15020000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1502XXXX 0 0x1000>;
+		};
+
+		mdp_img2o@15020000 {
+			compatible = "mediatek,mt8183-mdp-exto";
+			mediatek,mdp-id = <1>;
+		};
+
+		mdp_rsz0: mdp_rsz0@14003000 {
+			compatible = "mediatek,mt8183-mdp-rsz";
+			mediatek,mdp-id = <0>;
+			reg = <0 0x14003000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>;
+			clocks = <&mmsys CLK_MM_MDP_RSZ0>;
+		};
+
+		mdp_rsz1: mdp_rsz1@14004000 {
+			compatible = "mediatek,mt8183-mdp-rsz";
+			mediatek,mdp-id = <1>;
+			reg = <0 0x14004000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x4000 0x1000>;
+			clocks = <&mmsys CLK_MM_MDP_RSZ1>;
+		};
+
+		mdp_wrot0: mdp_wrot0@14005000 {
+			compatible = "mediatek,mt8183-mdp-wrot";
+			mediatek,mdp-id = <0>;
+			reg = <0 0x14005000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x5000 0x1000>;
+			clocks = <&mmsys CLK_MM_MDP_WROT0>;
+			iommus = <&iommu M4U_PORT_MDP_WROT0>;
+			mediatek,larb = <&larb0>;
+		};
+
+		mdp_path0_sout@14005000 {
+			compatible = "mediatek,mt8183-mdp-path";
+			mediatek,mdp-id = <0>;
+		};
+
+		mdp_wdma: mdp_wdma@14006000 {
+			compatible = "mediatek,mt8183-mdp-wdma";
+			mediatek,mdp-id = <0>;
+			reg = <0 0x14006000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x6000 0x1000>;
+			clocks = <&mmsys CLK_MM_MDP_WDMA0>;
+			iommus = <&iommu M4U_PORT_MDP_WDMA0>;
+			mediatek,larb = <&larb0>;
+		};
+
+		mdp_path1_sout@14006000 {
+			compatible = "mediatek,mt8183-mdp-path";
+			mediatek,mdp-id = <1>;
+		};
+
+		mdp_ccorr: mdp_ccorr@1401c000 {
+			compatible = "mediatek,mt8183-mdp-ccorr";
+			mediatek,mdp-id = <0>;
+			reg = <0 0x1401c000 0 0x1000>;
+			mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0xc000 0x1000>;
+			clocks = <&mmsys CLK_MM_MDP_CCORR>;
+		};
-- 
2.18.0


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings
  2019-09-11  9:34 ` [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings Bibby Hsieh
@ 2019-09-12  1:29   ` CK Hu
  2019-09-17 19:14   ` Rob Herring
  1 sibling, 0 replies; 4+ messages in thread
From: CK Hu @ 2019-09-12  1:29 UTC (permalink / raw)
  To: Bibby Hsieh
  Cc: hans.verkuil, laurent.pinchart+renesas, tfiga, matthias.bgg,
	mchehab, devicetree, Sean.Cheng, Rynn.Wu, srv_heupstream,
	daoyuan huang, holmes.chiou, Jerry-ch.Chen, jungo.lin, sj.huang,
	yuzhao, linux-mediatek, Ping-Hsun Wu, zwisler, christie.yu,
	frederic.chen, linux-arm-kernel, linux-media


Hi, Bibby:

On Wed, 2019-09-11 at 17:34 +0800, Bibby Hsieh wrote:
> From: daoyuan huang <daoyuan.huang@mediatek.com>
> 
> This patch adds DT binding document for Media Data Path 3 (MDP3)
> a unit in multimedia system used for scaling and color format convert.
> 
> Signed-off-by: Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> Signed-off-by: daoyuan huang <daoyuan.huang@mediatek.com>
> ---
>  .../bindings/media/mediatek,mt8183-mdp3.txt   | 201 ++++++++++++++++++
>  1 file changed, 201 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
> 
> diff --git a/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt b/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
> new file mode 100644
> index 000000000000..0d15326d12c1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
> @@ -0,0 +1,201 @@
> +* Mediatek Media Data Path 3
> +
> +Media Data Path 3 (MDP3) is used for scaling and color space conversion.
> +
> +Required properties (controller node):
> +- compatible: "mediatek,mt8183-mdp"
> +- mediatek,scp: the node of system control processor (SCP), using the
> +  remoteproc & rpmsg framework, see
> +  Documentation/devicetree/bindings/remoteproc/mtk,scp.txt for details.
> +- mediatek,mmsys: the node of mux(multiplexer) controller for HW connections.
> +- mediatek,mm-mutex: the node of sof(start of frame) signal controller.
> +- mediatek,mailbox-gce: the node of global command engine (GCE), used to
> +  read/write registers with critical time limitation, see
> +  Documentation/devicetree/bindings/mailbox/mtk-gce.txt for details.
> +- mboxes: mailbox number used to communicate with GCE.
> +- gce-subsys: sub-system id corresponding to the register address.
> +- gce-event-names: in use event name list, used to correspond to event IDs.
> +- gce-events: in use event IDs list, all IDs are defined in
> +  'dt-bindings/gce/mt8183-gce.h'.
> +
> +Required properties (all function blocks, child node):
> +- compatible: Should be one of
> +        "mediatek,mt8183-mdp-rdma"  - read DMA
> +        "mediatek,mt8183-mdp-rsz"   - resizer
> +        "mediatek,mt8183-mdp-wdma"  - write DMA
> +        "mediatek,mt8183-mdp-wrot"  - write DMA with rotation
> +        "mediatek,mt8183-mdp-ccorr" - color correction with 3X3 matrix
> +- reg: Physical base address and length of the function block register space
> +- clocks: device clocks, see
> +  Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> +- power-domains: a phandle to the power domain, see
> +  Documentation/devicetree/bindings/power/power_domain.txt for details.
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Required properties (DMA function blocks, child node):
> +- compatible: Should be one of
> +        "mediatek,mt8183-mdp-rdma"
> +        "mediatek,mt8183-mdp-wdma"
> +        "mediatek,mt8183-mdp-wrot"
> +- iommus: should point to the respective IOMMU block with master port as
> +  argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
> +  for details.
> +- mediatek,larb: must contain the local arbiters in the current Socs, see
> +  Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt
> +  for details.
> +
> +Required properties (input path selection node):
> +- compatible:
> +        "mediatek,mt8183-mdp-dl"    - MDP direct link input source selection
> +- reg: Physical base address and length of the function block register space
> +- clocks: device clocks, see
> +  Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Required properties (ISP PASS2 (DIP) module path selection node):
> +- compatible:
> +        "mediatek,mt8183-mdp-imgi"  - input DMA of ISP PASS2 (DIP) module for raw image input
> +- reg: Physical base address and length of the function block register space
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Required properties (SW node):
> +- compatible: Should be one of
> +        "mediatek,mt8183-mdp-exto"  - output DMA of ISP PASS2 (DIP) module for yuv image output
> +        "mediatek,mt8183-mdp-path"  - MDP output path selection
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Example:
> +		mdp_camin@14000000 {
> +			compatible = "mediatek,mt8183-mdp-dl";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14000000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_DL_TXCK>,
> +				<&mmsys CLK_MM_MDP_DL_RX>;
> +		};
> +
> +		mdp_camin2@14000000 {
> +			compatible = "mediatek,mt8183-mdp-dl";
> +			mediatek,mdp-id = <1>;
> +			reg = <0 0x14000000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_IPU_DL_TXCK>,
> +				<&mmsys CLK_MM_IPU_DL_RX>;
> +		};

In [1], mmsys, mdp_camin, mdp_camin2 are at the same address
(0x14000000), so these three should be only one device (mmsys device
[2]). As I know, mmsys provide display clock control, display routing,
mdp clock control and mdp routing, but the binding just show the clock
part. I guess mdp_camin and mdp_camin2 here are the mdp routing part of
mmsys, so this should be moved to mmsys binding.


[1] https://patchwork.kernel.org/patch/11140747/
[2]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt?h=v5.3-rc8

Regards,
CK
> +
> +		mdp_rdma0: mdp_rdma0@14001000 {
> +			compatible = "mediatek,mt8183-mdp-rdma",
> +				     "mediatek,mt8183-mdp3";
> +			mediatek,scp = <&scp>;
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14001000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x1000 0x1000>;
> +			power-domains = <&scpsys MT8183_POWER_DOMAIN_DISP>;
> +			clocks = <&mmsys CLK_MM_MDP_RDMA0>,
> +				<&mmsys CLK_MM_MDP_RSZ1>;
> +			iommus = <&iommu M4U_PORT_MDP_RDMA0>;
> +			mediatek,larb = <&larb0>;
> +			mediatek,mmsys = <&mmsys>;
> +			mediatek,mm-mutex = <&mutex>;
> +			mediatek,mailbox-gce = <&gce>;
> +			mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST 0>,
> +				<&gce 21 CMDQ_THR_PRIO_LOWEST 0>,
> +				<&gce 22 CMDQ_THR_PRIO_LOWEST 0>,
> +				<&gce 23 CMDQ_THR_PRIO_LOWEST 0>;
> +			gce-subsys = <&gce 0x14000000 SUBSYS_1400XXXX>,
> +				<&gce 0x14010000 SUBSYS_1401XXXX>,
> +				<&gce 0x14020000 SUBSYS_1402XXXX>,
> +				<&gce 0x15020000 SUBSYS_1502XXXX>;
> +			mediatek,gce-events = <CMDQ_EVENT_MDP_RDMA0_SOF>,
> +				<CMDQ_EVENT_MDP_RDMA0_EOF>,
> +				<CMDQ_EVENT_MDP_RSZ0_SOF>,
> +				<CMDQ_EVENT_MDP_RSZ1_SOF>,
> +				<CMDQ_EVENT_MDP_TDSHP_SOF>,
> +				<CMDQ_EVENT_MDP_WROT0_SOF>,
> +				<CMDQ_EVENT_MDP_WROT0_EOF>,
> +				<CMDQ_EVENT_MDP_WDMA0_SOF>,
> +				<CMDQ_EVENT_MDP_WDMA0_EOF>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_0>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_1>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_2>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_3>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_4>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_5>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_6>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_7>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_8>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_9>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_10>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_11>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_12>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_13>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_14>,
> +				<CMDQ_EVENT_WPE_A_DONE>,
> +				<CMDQ_EVENT_SPE_B_DONE>;
> +		};
> +
> +		mdp_imgi@15020000 {
> +			compatible = "mediatek,mt8183-mdp-imgi";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x15020000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1502XXXX 0 0x1000>;
> +		};
> +
> +		mdp_img2o@15020000 {
> +			compatible = "mediatek,mt8183-mdp-exto";
> +			mediatek,mdp-id = <1>;
> +		};
> +
> +		mdp_rsz0: mdp_rsz0@14003000 {
> +			compatible = "mediatek,mt8183-mdp-rsz";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14003000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_RSZ0>;
> +		};
> +
> +		mdp_rsz1: mdp_rsz1@14004000 {
> +			compatible = "mediatek,mt8183-mdp-rsz";
> +			mediatek,mdp-id = <1>;
> +			reg = <0 0x14004000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x4000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_RSZ1>;
> +		};
> +
> +		mdp_wrot0: mdp_wrot0@14005000 {
> +			compatible = "mediatek,mt8183-mdp-wrot";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14005000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x5000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_WROT0>;
> +			iommus = <&iommu M4U_PORT_MDP_WROT0>;
> +			mediatek,larb = <&larb0>;
> +		};
> +
> +		mdp_path0_sout@14005000 {
> +			compatible = "mediatek,mt8183-mdp-path";
> +			mediatek,mdp-id = <0>;
> +		};
> +
> +		mdp_wdma: mdp_wdma@14006000 {
> +			compatible = "mediatek,mt8183-mdp-wdma";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14006000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x6000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_WDMA0>;
> +			iommus = <&iommu M4U_PORT_MDP_WDMA0>;
> +			mediatek,larb = <&larb0>;
> +		};
> +
> +		mdp_path1_sout@14006000 {
> +			compatible = "mediatek,mt8183-mdp-path";
> +			mediatek,mdp-id = <1>;
> +		};
> +
> +		mdp_ccorr: mdp_ccorr@1401c000 {
> +			compatible = "mediatek,mt8183-mdp-ccorr";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x1401c000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0xc000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_CCORR>;
> +		};




^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings
  2019-09-11  9:34 ` [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings Bibby Hsieh
  2019-09-12  1:29   ` CK Hu
@ 2019-09-17 19:14   ` Rob Herring
  1 sibling, 0 replies; 4+ messages in thread
From: Rob Herring @ 2019-09-17 19:14 UTC (permalink / raw)
  To: Bibby Hsieh
  Cc: hans.verkuil, laurent.pinchart+renesas, tfiga, matthias.bgg,
	mchehab, yuzhao, zwisler, linux-mediatek, linux-arm-kernel,
	Sean.Cheng, sj.huang, christie.yu, holmes.chiou, frederic.chen,
	Jerry-ch.Chen, jungo.lin, Rynn.Wu, linux-media, srv_heupstream,
	devicetree, Daoyuan.Huang, Ping-Hsun Wu

On Wed, Sep 11, 2019 at 05:34:03PM +0800, Bibby Hsieh wrote:
> From: daoyuan huang <daoyuan.huang@mediatek.com>
> 
> This patch adds DT binding document for Media Data Path 3 (MDP3)
> a unit in multimedia system used for scaling and color format convert.
> 
> Signed-off-by: Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
> Signed-off-by: daoyuan huang <daoyuan.huang@mediatek.com>
> ---
>  .../bindings/media/mediatek,mt8183-mdp3.txt   | 201 ++++++++++++++++++
>  1 file changed, 201 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
> 
> diff --git a/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt b/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
> new file mode 100644
> index 000000000000..0d15326d12c1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/mediatek,mt8183-mdp3.txt
> @@ -0,0 +1,201 @@
> +* Mediatek Media Data Path 3
> +
> +Media Data Path 3 (MDP3) is used for scaling and color space conversion.
> +
> +Required properties (controller node):
> +- compatible: "mediatek,mt8183-mdp"
> +- mediatek,scp: the node of system control processor (SCP), using the
> +  remoteproc & rpmsg framework, see
> +  Documentation/devicetree/bindings/remoteproc/mtk,scp.txt for details.
> +- mediatek,mmsys: the node of mux(multiplexer) controller for HW connections.
> +- mediatek,mm-mutex: the node of sof(start of frame) signal controller.
> +- mediatek,mailbox-gce: the node of global command engine (GCE), used to
> +  read/write registers with critical time limitation, see
> +  Documentation/devicetree/bindings/mailbox/mtk-gce.txt for details.
> +- mboxes: mailbox number used to communicate with GCE.
> +- gce-subsys: sub-system id corresponding to the register address.
> +- gce-event-names: in use event name list, used to correspond to event IDs.
> +- gce-events: in use event IDs list, all IDs are defined in
> +  'dt-bindings/gce/mt8183-gce.h'.
> +
> +Required properties (all function blocks, child node):
> +- compatible: Should be one of
> +        "mediatek,mt8183-mdp-rdma"  - read DMA
> +        "mediatek,mt8183-mdp-rsz"   - resizer
> +        "mediatek,mt8183-mdp-wdma"  - write DMA
> +        "mediatek,mt8183-mdp-wrot"  - write DMA with rotation
> +        "mediatek,mt8183-mdp-ccorr" - color correction with 3X3 matrix
> +- reg: Physical base address and length of the function block register space
> +- clocks: device clocks, see
> +  Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> +- power-domains: a phandle to the power domain, see
> +  Documentation/devicetree/bindings/power/power_domain.txt for details.
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Required properties (DMA function blocks, child node):
> +- compatible: Should be one of
> +        "mediatek,mt8183-mdp-rdma"
> +        "mediatek,mt8183-mdp-wdma"
> +        "mediatek,mt8183-mdp-wrot"
> +- iommus: should point to the respective IOMMU block with master port as
> +  argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
> +  for details.
> +- mediatek,larb: must contain the local arbiters in the current Socs, see
> +  Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt
> +  for details.
> +
> +Required properties (input path selection node):
> +- compatible:
> +        "mediatek,mt8183-mdp-dl"    - MDP direct link input source selection
> +- reg: Physical base address and length of the function block register space
> +- clocks: device clocks, see
> +  Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Required properties (ISP PASS2 (DIP) module path selection node):
> +- compatible:
> +        "mediatek,mt8183-mdp-imgi"  - input DMA of ISP PASS2 (DIP) module for raw image input
> +- reg: Physical base address and length of the function block register space
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.
> +
> +Required properties (SW node):
> +- compatible: Should be one of
> +        "mediatek,mt8183-mdp-exto"  - output DMA of ISP PASS2 (DIP) module for yuv image output
> +        "mediatek,mt8183-mdp-path"  - MDP output path selection
> +- mediatek,mdp-id: HW index to distinguish same functionality modules.

These probably need to be split up to separate files in preparation to 
convert to schema (not required, feel free to convert to schema now).

> +
> +Example:
> +		mdp_camin@14000000 {

Don't use '_' in node or property names.

> +			compatible = "mediatek,mt8183-mdp-dl";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14000000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_DL_TXCK>,
> +				<&mmsys CLK_MM_MDP_DL_RX>;
> +		};
> +
> +		mdp_camin2@14000000 {
> +			compatible = "mediatek,mt8183-mdp-dl";
> +			mediatek,mdp-id = <1>;
> +			reg = <0 0x14000000 0 0x1000>;

Overlapping addresses for these 2 nodes. Don't do that.

> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0 0x1000>;
> +			clocks = <&mmsys CLK_MM_IPU_DL_TXCK>,
> +				<&mmsys CLK_MM_IPU_DL_RX>;
> +		};
> +
> +		mdp_rdma0: mdp_rdma0@14001000 {
> +			compatible = "mediatek,mt8183-mdp-rdma",
> +				     "mediatek,mt8183-mdp3";
> +			mediatek,scp = <&scp>;
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14001000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x1000 0x1000>;
> +			power-domains = <&scpsys MT8183_POWER_DOMAIN_DISP>;
> +			clocks = <&mmsys CLK_MM_MDP_RDMA0>,
> +				<&mmsys CLK_MM_MDP_RSZ1>;
> +			iommus = <&iommu M4U_PORT_MDP_RDMA0>;
> +			mediatek,larb = <&larb0>;
> +			mediatek,mmsys = <&mmsys>;
> +			mediatek,mm-mutex = <&mutex>;
> +			mediatek,mailbox-gce = <&gce>;
> +			mboxes = <&gce 20 CMDQ_THR_PRIO_LOWEST 0>,
> +				<&gce 21 CMDQ_THR_PRIO_LOWEST 0>,
> +				<&gce 22 CMDQ_THR_PRIO_LOWEST 0>,
> +				<&gce 23 CMDQ_THR_PRIO_LOWEST 0>;
> +			gce-subsys = <&gce 0x14000000 SUBSYS_1400XXXX>,
> +				<&gce 0x14010000 SUBSYS_1401XXXX>,
> +				<&gce 0x14020000 SUBSYS_1402XXXX>,
> +				<&gce 0x15020000 SUBSYS_1502XXXX>;
> +			mediatek,gce-events = <CMDQ_EVENT_MDP_RDMA0_SOF>,
> +				<CMDQ_EVENT_MDP_RDMA0_EOF>,
> +				<CMDQ_EVENT_MDP_RSZ0_SOF>,
> +				<CMDQ_EVENT_MDP_RSZ1_SOF>,
> +				<CMDQ_EVENT_MDP_TDSHP_SOF>,
> +				<CMDQ_EVENT_MDP_WROT0_SOF>,
> +				<CMDQ_EVENT_MDP_WROT0_EOF>,
> +				<CMDQ_EVENT_MDP_WDMA0_SOF>,
> +				<CMDQ_EVENT_MDP_WDMA0_EOF>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_0>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_1>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_2>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_3>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_4>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_5>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_6>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_7>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_8>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_9>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_10>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_11>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_12>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_13>,
> +				<CMDQ_EVENT_ISP_FRAME_DONE_P2_14>,
> +				<CMDQ_EVENT_WPE_A_DONE>,
> +				<CMDQ_EVENT_SPE_B_DONE>;
> +		};
> +
> +		mdp_imgi@15020000 {
> +			compatible = "mediatek,mt8183-mdp-imgi";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x15020000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1502XXXX 0 0x1000>;
> +		};
> +
> +		mdp_img2o@15020000 {

You need a reg property if you have a unit-address.

> +			compatible = "mediatek,mt8183-mdp-exto";
> +			mediatek,mdp-id = <1>;
> +		};
> +
> +		mdp_rsz0: mdp_rsz0@14003000 {
> +			compatible = "mediatek,mt8183-mdp-rsz";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14003000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_RSZ0>;
> +		};
> +
> +		mdp_rsz1: mdp_rsz1@14004000 {
> +			compatible = "mediatek,mt8183-mdp-rsz";
> +			mediatek,mdp-id = <1>;
> +			reg = <0 0x14004000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x4000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_RSZ1>;
> +		};
> +
> +		mdp_wrot0: mdp_wrot0@14005000 {
> +			compatible = "mediatek,mt8183-mdp-wrot";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14005000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x5000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_WROT0>;
> +			iommus = <&iommu M4U_PORT_MDP_WROT0>;
> +			mediatek,larb = <&larb0>;
> +		};
> +
> +		mdp_path0_sout@14005000 {
> +			compatible = "mediatek,mt8183-mdp-path";
> +			mediatek,mdp-id = <0>;

reg?

> +		};
> +
> +		mdp_wdma: mdp_wdma@14006000 {
> +			compatible = "mediatek,mt8183-mdp-wdma";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x14006000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x6000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_WDMA0>;
> +			iommus = <&iommu M4U_PORT_MDP_WDMA0>;
> +			mediatek,larb = <&larb0>;
> +		};
> +
> +		mdp_path1_sout@14006000 {
> +			compatible = "mediatek,mt8183-mdp-path";
> +			mediatek,mdp-id = <1>;

reg?

> +		};
> +
> +		mdp_ccorr: mdp_ccorr@1401c000 {
> +			compatible = "mediatek,mt8183-mdp-ccorr";
> +			mediatek,mdp-id = <0>;
> +			reg = <0 0x1401c000 0 0x1000>;
> +			mediatek,gce-client-reg = <&gce SUBSYS_1401XXXX 0xc000 0x1000>;
> +			clocks = <&mmsys CLK_MM_MDP_CCORR>;
> +		};
> -- 
> 2.18.0
> 

^ permalink raw reply	[flat|nested] 4+ messages in thread

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-- links below jump to the message on this page --
2019-09-11  9:34 [RFC, v3, 0/4] media: mediatek: support mdp3 on mt8183 platform Bibby Hsieh
2019-09-11  9:34 ` [RFC, v3, 1/4] dt-binding: mt8183: Add Mediatek MDP3 dt-bindings Bibby Hsieh
2019-09-12  1:29   ` CK Hu
2019-09-17 19:14   ` Rob Herring

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	public-inbox-index linux-media


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-media


AGPL code for this site: git clone https://public-inbox.org/ public-inbox