From: Sui Jingfeng <15330273260@189.cn> To: Maxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>, Roland Scheidegger <sroland@vmware.com>, Zack Rusin <zackr@vmware.com>, Christian Gmeiner <christian.gmeiner@gmail.com>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Rob Herring <robh+dt@kernel.org>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Dan Carpenter <dan.carpenter@oracle.com>, Krzysztof Kozlowski <krzk@kernel.org>, Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>, Sam Ravnborg <sam@ravnborg.org>, "David S . Miller" <davem@davemloft.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Lucas Stach <l.stach@pengutronix.de>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Ilia Mirkin <imirkin@alum.mit.edu>, Qing Zhang <zhangqing@loongson.cn>, suijingfeng <suijingfeng@loongson.cn> Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH v11 5/7] dt-bindings: display: Add Loongson display controller Date: Tue, 22 Mar 2022 00:29:14 +0800 [thread overview] Message-ID: <20220321162916.1116541-6-15330273260@189.cn> (raw) In-Reply-To: <20220321162916.1116541-1-15330273260@189.cn> From: suijingfeng <suijingfeng@loongson.cn> Signed-off-by: suijingfeng <suijingfeng@loongson.cn> Signed-off-by: Sui Jingfeng <15330273260@189.cn> --- .../loongson/loongson,display-controller.yaml | 230 ++++++++++++++++++ 1 file changed, 230 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml diff --git a/Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml b/Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml new file mode 100644 index 000000000000..7be63346289e --- /dev/null +++ b/Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml @@ -0,0 +1,230 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/loongson/loongson,display-controller.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson LS7A1000/LS2K1000/LS2K0500 Display Controller Device Tree Bindings + +maintainers: + - Sui Jingfeng <suijingfeng@loongson.cn> + +description: |+ + + Loongson display controllers are simple which require scanout buffers + to be physically contiguous. LS2K1000/LS2K0500 is a SOC, only system + memory is available. LS7A1000/LS7A2000 is bridge chip which is equipped + with a dedicated video RAM which is 64MB or more, precise size can be + read from the PCI BAR 2 of the GPU device(0x0014:0x7A15) in the bridge + chip. + + LSDC has two display pipes, each way has a DVO interface which provide + RGB888 signals, vertical & horizontal synchronisations, data enable and + the pixel clock. LSDC has two CRTC, each CRTC is able to scanout from + 1920x1080 resolution at 60Hz. Each CRTC has two FB address registers. + + For LS7A1000, there are 4 dedicated GPIOs whose control register is + located at the DC register space. They are used to emulate two way i2c, + One for DVO0, another for DVO1. + + LS2K1000 and LS2K0500 SoC grab i2c adapter from other module, either + general purpose GPIO emulated i2c or hardware i2c in the SoC. + + LSDC's display pipeline have several components as below description, + + The display controller in LS7A1000: + ___________________ _________ + | -------| | | + | CRTC0 --> | DVO0 ----> Encoder0 ---> Connector0 ---> | Monitor | + | _ _ -------| ^ ^ |_________| + | | | | | -------| | | + | |_| |_| | i2c0 <--------+-------------+ + | -------| + | DC IN LS7A1000 | + | _ _ -------| + | | | | | | i2c1 <--------+-------------+ + | |_| |_| -------| | | _________ + | -------| | | | | + | CRTC1 --> | DVO1 ----> Encoder1 ---> Connector1 ---> | Panel | + | -------| |_________| + |___________________| + + Simple usage of LS7A1000 with LS3A4000 CPU: + + +------+ +-----------------------------------+ + | DDR4 | | +-------------------+ | + +------+ | | PCIe Root complex | LS7A1000 | + || MC0 | +--++---------++----+ | + +----------+ HT 3.0 | || || | + | LS3A4000 |<-------->| +---++---+ +--++--+ +---------+ +------+ + | CPU |<-------->| | GC1000 | | LSDC |<-->| DDR3 MC |<->| VRAM | + +----------+ | +--------+ +-+--+-+ +---------+ +------+ + || MC1 +---------------|--|----------------+ + +------+ | | + | DDR4 | +-------+ DVO0 | | DVO1 +------+ + +------+ VGA <--|ADV7125|<--------+ +-------->|TFP410|--> DVI/HDMI + +-------+ +------+ + + The display controller in LS2K1000/LS2K0500: + ___________________ _________ + | -------| | | + | CRTC0 --> | DVO0 ----> Encoder0 ---> Connector0 ---> | Monitor | + | _ _ -------| ^ ^ |_________| + | | | | | | | | + | |_| |_| | +------+ | + | <---->| i2c0 |<---------+ + | DC IN LS2K1000 | +------+ + | _ _ | +------+ + | | | | | <---->| i2c1 |----------+ + | |_| |_| | +------+ | _________ + | -------| | | | | + | CRTC1 --> | DVO1 ----> Encoder1 ---> Connector1 ---> | Panel | + | -------| |_________| + |___________________| + +properties: + $nodename: + pattern: "^display-controller@[0-9a-f],[0-9a-f]$" + + compatible: + oneOf: + - items: + - enum: + - loongson,ls7a1000-dc + - loongson,ls2k1000-dc + - loongson,ls2k0500-dc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + i2c-gpio@0: + description: | + Built-in GPIO emulate i2c exported for external display bridge + configuration, onitor detection and edid read back etc, for ls7a1000 + only. Its compatible must be lsdc,i2c-gpio-0. The reg property can be + used to specify a I2c adapter bus number, if you don't specify one + i2c driver core will dynamically assign a bus number. Please specify + it only when its bus number matters. Bus number greater than 6 is safe + because ls7a1000 bridge have 6 hardware I2C controller integrated. + + i2c-gpio@1: + description: | + Built-in GPIO emulate i2c exported for external display bridge + configuration, onitor detection and edid read back etc, for ls7a1000 + only. Its compatible must be lsdc,i2c-gpio-1. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: output port node connected with DPI panels or external encoders, with only one endpoint. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: output port node connected with DPI panels or external encoders, with only one endpoint. + + required: + - port@0 + - port@1 + +required: + - compatible + - reg + - interrupts + - ports + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + bus { + + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <2>; + + display-controller@6,1 { + compatible = "loongson,ls7a1000-dc"; + reg = <0x3100 0x0 0x0 0x0 0x0>; + interrupts = <28 IRQ_TYPE_LEVEL_HIGH>; + + #address-cells = <1>; + #size-cells = <0>; + + i2c-gpio@0 { + compatible = "lsdc,i2c-gpio-0"; + reg = <6>; + sda = <0>; + scl = <1>; + }; + + i2c-gpio@1 { + compatible = "lsdc,i2c-gpio-1"; + reg = <7>; + sda = <2>; + scl = <3>; + }; + + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + endpoint { + remote-endpoint = <&vga_encoder_in>; + }; + }; + port@1 { + reg = <1>; + endpoint { + remote-endpoint = <&dvi_encoder_in>; + }; + }; + }; + }; + }; + + - | + #include <dt-bindings/interrupt-controller/irq.h> + bus { + + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <2>; + + display-controller@6,0 { + compatible = "loongson,ls2k1000-dc"; + reg = <0x3100 0x0 0x0 0x0 0x0>; + interrupts = <28 IRQ_TYPE_LEVEL_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + endpoint { + remote-endpoint = <&panel_in>; + }; + }; + port@1 { + reg = <1>; + endpoint { + remote-endpoint = <&hdmi_encoder_in>; + }; + }; + }; + }; + }; +... -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Sui Jingfeng <15330273260@189.cn> To: Maxime Ripard <mripard@kernel.org>, Thomas Zimmermann <tzimmermann@suse.de>, Roland Scheidegger <sroland@vmware.com>, Zack Rusin <zackr@vmware.com>, Christian Gmeiner <christian.gmeiner@gmail.com>, David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>, Rob Herring <robh+dt@kernel.org>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, Dan Carpenter <dan.carpenter@oracle.com>, Krzysztof Kozlowski <krzk@kernel.org>, Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>, Sam Ravnborg <sam@ravnborg.org>, "David S . Miller" <davem@davemloft.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Lucas Stach <l.stach@pengutronix.de>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Ilia Mirkin <imirkin@alum.mit.edu>, Qing Zhang <zhangqing@loongson.cn>, suijingfeng <suijingfeng@loongson.cn> Cc: devicetree@vger.kernel.org, linux-mips@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v11 5/7] dt-bindings: display: Add Loongson display controller Date: Tue, 22 Mar 2022 00:29:14 +0800 [thread overview] Message-ID: <20220321162916.1116541-6-15330273260@189.cn> (raw) In-Reply-To: <20220321162916.1116541-1-15330273260@189.cn> From: suijingfeng <suijingfeng@loongson.cn> Signed-off-by: suijingfeng <suijingfeng@loongson.cn> Signed-off-by: Sui Jingfeng <15330273260@189.cn> --- .../loongson/loongson,display-controller.yaml | 230 ++++++++++++++++++ 1 file changed, 230 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml diff --git a/Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml b/Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml new file mode 100644 index 000000000000..7be63346289e --- /dev/null +++ b/Documentation/devicetree/bindings/display/loongson/loongson,display-controller.yaml @@ -0,0 +1,230 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/loongson/loongson,display-controller.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson LS7A1000/LS2K1000/LS2K0500 Display Controller Device Tree Bindings + +maintainers: + - Sui Jingfeng <suijingfeng@loongson.cn> + +description: |+ + + Loongson display controllers are simple which require scanout buffers + to be physically contiguous. LS2K1000/LS2K0500 is a SOC, only system + memory is available. LS7A1000/LS7A2000 is bridge chip which is equipped + with a dedicated video RAM which is 64MB or more, precise size can be + read from the PCI BAR 2 of the GPU device(0x0014:0x7A15) in the bridge + chip. + + LSDC has two display pipes, each way has a DVO interface which provide + RGB888 signals, vertical & horizontal synchronisations, data enable and + the pixel clock. LSDC has two CRTC, each CRTC is able to scanout from + 1920x1080 resolution at 60Hz. Each CRTC has two FB address registers. + + For LS7A1000, there are 4 dedicated GPIOs whose control register is + located at the DC register space. They are used to emulate two way i2c, + One for DVO0, another for DVO1. + + LS2K1000 and LS2K0500 SoC grab i2c adapter from other module, either + general purpose GPIO emulated i2c or hardware i2c in the SoC. + + LSDC's display pipeline have several components as below description, + + The display controller in LS7A1000: + ___________________ _________ + | -------| | | + | CRTC0 --> | DVO0 ----> Encoder0 ---> Connector0 ---> | Monitor | + | _ _ -------| ^ ^ |_________| + | | | | | -------| | | + | |_| |_| | i2c0 <--------+-------------+ + | -------| + | DC IN LS7A1000 | + | _ _ -------| + | | | | | | i2c1 <--------+-------------+ + | |_| |_| -------| | | _________ + | -------| | | | | + | CRTC1 --> | DVO1 ----> Encoder1 ---> Connector1 ---> | Panel | + | -------| |_________| + |___________________| + + Simple usage of LS7A1000 with LS3A4000 CPU: + + +------+ +-----------------------------------+ + | DDR4 | | +-------------------+ | + +------+ | | PCIe Root complex | LS7A1000 | + || MC0 | +--++---------++----+ | + +----------+ HT 3.0 | || || | + | LS3A4000 |<-------->| +---++---+ +--++--+ +---------+ +------+ + | CPU |<-------->| | GC1000 | | LSDC |<-->| DDR3 MC |<->| VRAM | + +----------+ | +--------+ +-+--+-+ +---------+ +------+ + || MC1 +---------------|--|----------------+ + +------+ | | + | DDR4 | +-------+ DVO0 | | DVO1 +------+ + +------+ VGA <--|ADV7125|<--------+ +-------->|TFP410|--> DVI/HDMI + +-------+ +------+ + + The display controller in LS2K1000/LS2K0500: + ___________________ _________ + | -------| | | + | CRTC0 --> | DVO0 ----> Encoder0 ---> Connector0 ---> | Monitor | + | _ _ -------| ^ ^ |_________| + | | | | | | | | + | |_| |_| | +------+ | + | <---->| i2c0 |<---------+ + | DC IN LS2K1000 | +------+ + | _ _ | +------+ + | | | | | <---->| i2c1 |----------+ + | |_| |_| | +------+ | _________ + | -------| | | | | + | CRTC1 --> | DVO1 ----> Encoder1 ---> Connector1 ---> | Panel | + | -------| |_________| + |___________________| + +properties: + $nodename: + pattern: "^display-controller@[0-9a-f],[0-9a-f]$" + + compatible: + oneOf: + - items: + - enum: + - loongson,ls7a1000-dc + - loongson,ls2k1000-dc + - loongson,ls2k0500-dc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + i2c-gpio@0: + description: | + Built-in GPIO emulate i2c exported for external display bridge + configuration, onitor detection and edid read back etc, for ls7a1000 + only. Its compatible must be lsdc,i2c-gpio-0. The reg property can be + used to specify a I2c adapter bus number, if you don't specify one + i2c driver core will dynamically assign a bus number. Please specify + it only when its bus number matters. Bus number greater than 6 is safe + because ls7a1000 bridge have 6 hardware I2C controller integrated. + + i2c-gpio@1: + description: | + Built-in GPIO emulate i2c exported for external display bridge + configuration, onitor detection and edid read back etc, for ls7a1000 + only. Its compatible must be lsdc,i2c-gpio-1. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: output port node connected with DPI panels or external encoders, with only one endpoint. + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: output port node connected with DPI panels or external encoders, with only one endpoint. + + required: + - port@0 + - port@1 + +required: + - compatible + - reg + - interrupts + - ports + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + bus { + + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <2>; + + display-controller@6,1 { + compatible = "loongson,ls7a1000-dc"; + reg = <0x3100 0x0 0x0 0x0 0x0>; + interrupts = <28 IRQ_TYPE_LEVEL_HIGH>; + + #address-cells = <1>; + #size-cells = <0>; + + i2c-gpio@0 { + compatible = "lsdc,i2c-gpio-0"; + reg = <6>; + sda = <0>; + scl = <1>; + }; + + i2c-gpio@1 { + compatible = "lsdc,i2c-gpio-1"; + reg = <7>; + sda = <2>; + scl = <3>; + }; + + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + endpoint { + remote-endpoint = <&vga_encoder_in>; + }; + }; + port@1 { + reg = <1>; + endpoint { + remote-endpoint = <&dvi_encoder_in>; + }; + }; + }; + }; + }; + + - | + #include <dt-bindings/interrupt-controller/irq.h> + bus { + + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <2>; + + display-controller@6,0 { + compatible = "loongson,ls2k1000-dc"; + reg = <0x3100 0x0 0x0 0x0 0x0>; + interrupts = <28 IRQ_TYPE_LEVEL_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + endpoint { + remote-endpoint = <&panel_in>; + }; + }; + port@1 { + reg = <1>; + endpoint { + remote-endpoint = <&hdmi_encoder_in>; + }; + }; + }; + }; + }; +... -- 2.25.1
next prev parent reply other threads:[~2022-03-21 16:30 UTC|newest] Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-03-21 16:29 [PATCH v11 0/7] drm/lsdc: add drm driver for loongson display controller Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-21 16:29 ` [PATCH v11 1/7] MIPS: Loongson64: dts: update the display controller device node Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-21 16:29 ` [PATCH v11 2/7] MIPS: Loongson64: dts: introduce ls3A4000 evaluation board Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-22 13:05 ` Jiaxun Yang 2022-03-22 13:05 ` Jiaxun Yang 2022-03-22 13:38 ` Sui Jingfeng 2022-03-22 13:38 ` Sui Jingfeng 2022-03-22 16:06 ` Jiaxun Yang 2022-03-22 16:06 ` Jiaxun Yang 2022-03-23 1:53 ` Sui Jingfeng 2022-03-23 1:53 ` Sui Jingfeng 2022-03-23 2:29 ` Jiaxun Yang 2022-03-23 2:29 ` Jiaxun Yang 2022-03-23 3:07 ` Sui Jingfeng 2022-03-23 3:07 ` Sui Jingfeng 2022-03-23 3:14 ` Jiaxun Yang 2022-03-23 3:14 ` Jiaxun Yang 2022-03-23 7:07 ` Sui Jingfeng 2022-03-23 7:07 ` Sui Jingfeng 2022-03-23 12:29 ` Jiaxun Yang 2022-03-23 12:29 ` Jiaxun Yang 2022-03-23 12:53 ` Rob Herring 2022-03-23 12:53 ` Rob Herring 2022-03-24 1:51 ` Sui Jingfeng 2022-03-24 1:51 ` Sui Jingfeng 2022-03-21 16:29 ` [PATCH v11 3/7] MIPS: Loongson64: dts: introduce lemote A1901 motherboard Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-21 16:29 ` [PATCH v11 4/7] MIPS: Loongson64: dts: introduce ls2k1000 pai evaluation board Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng [this message] 2022-03-21 16:29 ` [PATCH v11 5/7] dt-bindings: display: Add Loongson display controller Sui Jingfeng 2022-03-21 23:20 ` Rob Herring 2022-03-21 23:20 ` Rob Herring 2022-03-22 2:33 ` Sui Jingfeng 2022-03-22 2:33 ` Sui Jingfeng 2022-03-22 13:08 ` Jiaxun Yang 2022-03-22 13:08 ` Jiaxun Yang 2022-03-22 13:54 ` Sui Jingfeng 2022-03-22 13:54 ` Sui Jingfeng 2022-03-22 16:08 ` Jiaxun Yang 2022-03-22 16:08 ` Jiaxun Yang 2022-03-22 20:03 ` Rob Herring 2022-03-22 20:03 ` Rob Herring 2022-03-22 20:55 ` Rob Herring 2022-03-22 20:55 ` Rob Herring 2022-03-23 3:38 ` Sui Jingfeng 2022-03-23 3:38 ` Sui Jingfeng 2022-03-23 13:03 ` Rob Herring 2022-03-23 13:03 ` Rob Herring 2022-03-24 1:48 ` Sui Jingfeng 2022-03-24 1:48 ` Sui Jingfeng 2022-03-24 13:26 ` Rob Herring 2022-03-24 13:26 ` Rob Herring 2022-03-26 10:04 ` Sui Jingfeng 2022-03-26 10:04 ` Sui Jingfeng 2022-03-28 14:04 ` Rob Herring 2022-03-28 14:04 ` Rob Herring 2022-03-29 2:02 ` Sui Jingfeng 2022-03-29 2:02 ` Sui Jingfeng 2022-03-29 13:24 ` Rob Herring 2022-03-29 13:24 ` Rob Herring 2022-03-21 16:29 ` [PATCH v11 6/7] MIPS: Loongson64: defconfig: enable display bridge drivers on Loongson64 Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-21 16:29 ` [PATCH v11 7/7] drm/lsdc: add drm driver for loongson display controller Sui Jingfeng 2022-03-21 16:29 ` Sui Jingfeng 2022-03-22 20:49 ` Rob Herring 2022-03-22 20:49 ` Rob Herring 2022-03-23 4:12 ` Sui Jingfeng 2022-03-23 4:12 ` Sui Jingfeng 2022-03-23 13:11 ` Rob Herring 2022-03-23 13:11 ` Rob Herring 2022-03-24 4:05 ` Sui Jingfeng 2022-03-24 4:05 ` Sui Jingfeng 2022-04-08 2:09 ` Sui Jingfeng 2022-04-08 2:09 ` Sui Jingfeng 2022-03-23 4:19 ` Sui Jingfeng 2022-03-23 4:19 ` Sui Jingfeng 2022-03-23 8:49 ` Sui Jingfeng 2022-03-23 8:49 ` Sui Jingfeng 2022-03-23 9:31 ` Sui Jingfeng 2022-03-23 9:31 ` Sui Jingfeng 2022-03-24 1:39 ` Sui Jingfeng 2022-03-24 1:39 ` Sui Jingfeng 2022-03-24 13:42 ` Rob Herring 2022-03-24 13:42 ` Rob Herring 2022-03-24 7:32 ` Sui Jingfeng 2022-03-24 7:32 ` Sui Jingfeng 2022-03-24 13:56 ` Rob Herring 2022-03-24 13:56 ` Rob Herring 2023-01-17 3:08 ` Sui jingfeng 2023-02-03 2:48 ` suijingfeng
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