The Versatile Express was submitted with the actual display bridges unconnected (but defined in the device tree) and mock "panels" encoded in the device tree node of the PL111 controller.
This doesn't even remotely describe the actual Versatile Express hardware. Exploit the SiI9022 bridge by connecting the PL111 pads to it, making it use EDID or fallback values to drive the monitor.
The also has to use the reserved memory through the CMA pool rather than by open coding a memory region and remapping it explicitly in the driver. To achieve this, a reserved-memory node must exist in the root of the device tree, so we need to pull that out of the motherboard .dtsi include files, and push it into each top-level device tree instead.
We do the same manouver for all the Versatile Express boards, taking into account the different location of the video RAM depending on which chip select is used on each platform.
This plays nicely with the new PL111 DRM driver and follows the standard ways of assigning bridges and memory pools for graphics.
Cc: Sudeep Holla sudeep.holla@arm.com Cc: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Cc: Liviu Dudau liviu.dudau@arm.com Cc: Mali DP Maintainers malidp@foss.arm.com Cc: Robin Murphy robin.murphy@arm.com Signed-off-by: Linus Walleij linus.walleij@linaro.org --- ChangeLog v4->v5: - Fix up the RTSMv8 AEM VE by using the new simple VGA panel I invented in the DRI simple panel. - NOTE: This patch depends at runtime on the DRM simple panel patch "drm/panel: simple: Support simple VGA panels" ChangeLog v3->v4: - Fix the ARM and ARM64 shared vexpress-v2m-rc1.dtsi file address-cells etc so that the ports do not give DTC warnings anymore. - Fixed up the CA53 DTS: use the right chip select base at 0x18000000. - Fixed up the Real-Time Systems Models Virtual Executive RTSMv8 AEM VE: - Added the I2C interface (whether implemented in the emulator or not) - Fixed the chip select of the memory node to the right memory base 0x18000000. - Add right address-cells and size-cells to the vexpress-v2m.dtsi dvi port as well. - Create two endpoints for the motherboard and the core tile in the vexpress-v2m.dtsi. This is just used by the CA9 VExpress. Tested on both QEMU and the actual hardware with the DRM driver. This removes the last warnings from the DTC. ChangeLog v2->v3: - Add some reg = <0>; to the ports to make the DTC happy. - Add reserved memory node to arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts as well. ChangeLog v1->v2: - Fix up the memory address for the -rs1 tiles to 0x18000000 - Drop a bunch of extraneous reg props from the DVI adapter --- arch/arm/boot/dts/vexpress-v2m-rs1.dtsi | 49 +++++---------- arch/arm/boot/dts/vexpress-v2m.dtsi | 63 +++++++++---------- arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts | 14 +++++ arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 14 +++++ arch/arm/boot/dts/vexpress-v2p-ca5s.dts | 14 +++++ arch/arm/boot/dts/vexpress-v2p-ca9.dts | 43 ++++++------- arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts | 27 ++++++++ .../boot/dts/arm/rtsm_ve-motherboard.dtsi | 37 ++--------- .../boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts | 14 +++++ 9 files changed, 154 insertions(+), 121 deletions(-)
diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi index 4488c8fe213a..a9569d15de41 100644 --- a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi +++ b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi @@ -43,11 +43,6 @@ bank-width = <4>; };
- v2m_video_ram: vram@2,00000000 { - compatible = "arm,vexpress-vram"; - reg = <2 0x00000000 0x00800000>; - }; - ethernet@2,02000000 { compatible = "smsc,lan9118", "smsc,lan9115"; reg = <2 0x02000000 0x10000>; @@ -223,13 +218,24 @@ v2m_i2c_dvi: i2c@160000 { compatible = "arm,versatile-i2c"; reg = <0x160000 0x1000>; - #address-cells = <1>; #size-cells = <0>;
dvi-transmitter@39 { compatible = "sil,sii9022-tpi", "sil,sii9022"; reg = <0x39>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dvi_bridge_in: endpoint { + remote-endpoint = <&clcd_pads>; + }; + }; + }; };
dvi-transmitter@60 { @@ -260,37 +266,16 @@ interrupts = <14>; clocks = <&v2m_oscclk1>, <&smbclk>; clock-names = "clcdclk", "apb_pclk"; - memory-region = <&v2m_video_ram>; - max-memory-bandwidth = <50350000>; /* 16bpp @ 25.175MHz */ + /* 800x600 16bpp @36MHz works fine */ + max-memory-bandwidth = <54000000>; + memory-region = <&vram>;
port { - v2m_clcd_pads: endpoint { - remote-endpoint = <&v2m_clcd_panel>; + clcd_pads: endpoint { + remote-endpoint = <&dvi_bridge_in>; arm,pl11x,tft-r0g0b0-pads = <0 8 16>; }; }; - - panel { - compatible = "panel-dpi"; - - port { - v2m_clcd_panel: endpoint { - remote-endpoint = <&v2m_clcd_pads>; - }; - }; - - panel-timing { - clock-frequency = <25175000>; - hactive = <640>; - hback-porch = <40>; - hfront-porch = <24>; - hsync-len = <96>; - vactive = <480>; - vback-porch = <32>; - vfront-porch = <11>; - vsync-len = <2>; - }; - }; }; };
diff --git a/arch/arm/boot/dts/vexpress-v2m.dtsi b/arch/arm/boot/dts/vexpress-v2m.dtsi index 4db42f6326a3..fd42e1194179 100644 --- a/arch/arm/boot/dts/vexpress-v2m.dtsi +++ b/arch/arm/boot/dts/vexpress-v2m.dtsi @@ -43,11 +43,6 @@ bank-width = <4>; };
- v2m_video_ram: vram@3,00000000 { - compatible = "arm,vexpress-vram"; - reg = <3 0x00000000 0x00800000>; - }; - ethernet@3,02000000 { compatible = "smsc,lan9118", "smsc,lan9115"; reg = <3 0x02000000 0x10000>; @@ -223,13 +218,37 @@ v2m_i2c_dvi: i2c@16000 { compatible = "arm,versatile-i2c"; reg = <0x16000 0x1000>; - #address-cells = <1>; #size-cells = <0>;
dvi-transmitter@39 { compatible = "sil,sii9022-tpi", "sil,sii9022"; reg = <0x39>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + /* + * Both the core tile and the motherboard routes their output + * pads to this transmitter. The motherboard system controller + * can select one of them as input using a mux register in + * "arm,vexpress-muxfpga". The Vexpress with the CA9 core tile is + * the only platform with this specific set-up. + */ + port@0 { + reg = <0>; + dvi_bridge_in_ct: endpoint { + remote-endpoint = <&clcd_pads_ct>; + }; + }; + port@1 { + reg = <1>; + dvi_bridge_in_mb: endpoint { + remote-endpoint = <&clcd_pads_mb>; + }; + }; + }; };
dvi-transmitter@60 { @@ -253,6 +272,7 @@ reg-shift = <2>; };
+ clcd@1f000 { compatible = "arm,pl111", "arm,primecell"; reg = <0x1f000 0x1000>; @@ -260,37 +280,16 @@ interrupts = <14>; clocks = <&v2m_oscclk1>, <&smbclk>; clock-names = "clcdclk", "apb_pclk"; - memory-region = <&v2m_video_ram>; - max-memory-bandwidth = <50350000>; /* 16bpp @ 25.175MHz */ + /* 800x600 16bpp @36MHz works fine */ + max-memory-bandwidth = <54000000>; + memory-region = <&vram>;
port { - v2m_clcd_pads: endpoint { - remote-endpoint = <&v2m_clcd_panel>; + clcd_pads_mb: endpoint { + remote-endpoint = <&dvi_bridge_in_mb>; arm,pl11x,tft-r0g0b0-pads = <0 8 16>; }; }; - - panel { - compatible = "panel-dpi"; - - port { - v2m_clcd_panel: endpoint { - remote-endpoint = <&v2m_clcd_pads>; - }; - }; - - panel-timing { - clock-frequency = <25175000>; - hactive = <640>; - hback-porch = <40>; - hfront-porch = <24>; - hsync-len = <96>; - vactive = <480>; - vback-porch = <32>; - vfront-porch = <11>; - vsync-len = <2>; - }; - }; }; };
diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts index 3971427a105b..0dc4277d5f8b 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dts @@ -53,6 +53,20 @@ reg = <0 0x80000000 0 0x40000000>; };
+ reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + /* Chipselect 2 is physically at 0x18000000 */ + vram: vram@18000000 { + /* 8 MB of designated video RAM */ + compatible = "shared-dma-pool"; + reg = <0 0x18000000 0 0x00800000>; + no-map; + }; + }; + hdlcd@2b000000 { compatible = "arm,hdlcd"; reg = <0 0x2b000000 0 0x1000>; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts index ac6b90e9d806..a5136b1adaa2 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts @@ -104,6 +104,20 @@ reg = <0 0x80000000 0 0x40000000>; };
+ reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + /* Chipselect 2 is physically at 0x18000000 */ + vram: vram@18000000 { + /* 8 MB of designated video RAM */ + compatible = "shared-dma-pool"; + reg = <0 0x18000000 0 0x00800000>; + no-map; + }; + }; + wdt@2a490000 { compatible = "arm,sp805", "arm,primecell"; reg = <0 0x2a490000 0 0x1000>; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts index e5b4a7570a01..d5b47d526f9e 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca5s.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca5s.dts @@ -55,6 +55,20 @@ reg = <0x80000000 0x40000000>; };
+ reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + /* Chipselect 2 is physically at 0x18000000 */ + vram: vram@18000000 { + /* 8 MB of designated video RAM */ + compatible = "shared-dma-pool"; + reg = <0x18000000 0x00800000>; + no-map; + }; + }; + hdlcd@2a110000 { compatible = "arm,hdlcd"; reg = <0x2a110000 0x1000>; diff --git a/arch/arm/boot/dts/vexpress-v2p-ca9.dts b/arch/arm/boot/dts/vexpress-v2p-ca9.dts index 7ec3dac1f61d..7f019e0eee84 100644 --- a/arch/arm/boot/dts/vexpress-v2p-ca9.dts +++ b/arch/arm/boot/dts/vexpress-v2p-ca9.dts @@ -69,6 +69,20 @@ reg = <0x60000000 0x40000000>; };
+ reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + /* Chipselect 3 is physically at 0x4c000000 */ + vram: vram@4c000000 { + /* 8 MB of designated video RAM */ + compatible = "shared-dma-pool"; + reg = <0x4c000000 0x00800000>; + no-map; + }; + }; + clcd@10020000 { compatible = "arm,pl111", "arm,primecell"; reg = <0x10020000 0x1000>; @@ -76,36 +90,15 @@ interrupts = <0 44 4>; clocks = <&oscclk1>, <&oscclk2>; clock-names = "clcdclk", "apb_pclk"; - max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */ + /* 1024x768 16bpp @65MHz */ + max-memory-bandwidth = <95000000>;
port { - clcd_pads: endpoint { - remote-endpoint = <&clcd_panel>; + clcd_pads_ct: endpoint { + remote-endpoint = <&dvi_bridge_in_ct>; arm,pl11x,tft-r0g0b0-pads = <0 8 16>; }; }; - - panel { - compatible = "panel-dpi"; - - port { - clcd_panel: endpoint { - remote-endpoint = <&clcd_pads>; - }; - }; - - panel-timing { - clock-frequency = <63500127>; - hactive = <1024>; - hback-porch = <152>; - hfront-porch = <48>; - hsync-len = <104>; - vactive = <768>; - vback-porch = <23>; - vfront-porch = <3>; - vsync-len = <4>; - }; - }; };
memory-controller@100e0000 { diff --git a/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts b/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts index 602f63f72c37..4d7bed15bf6f 100644 --- a/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts +++ b/arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts @@ -78,6 +78,20 @@ <0x00000008 0x80000000 0 0x80000000>; };
+ reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + /* Chipselect 2,00000000 is physically at 0x18000000 */ + vram: vram@18000000 { + /* 8 MB of designated video RAM */ + compatible = "shared-dma-pool"; + reg = <0x00000000 0x18000000 0 0x00800000>; + no-map; + }; + }; + gic: interrupt-controller@2c001000 { compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic"; #interrupt-cells = <3>; @@ -107,6 +121,19 @@ <0 63 4>; };
+ /* + * The RTSM doesn't have a real panel, so let's pretend that the + * CLCD is connected to a VGA-type panel. + */ + panel { + compatible = "video-graphics-array"; + port { + vga_panel_in: endpoint { + remote-endpoint = <&clcd_pads>; + }; + }; + }; + smb@8000000 { compatible = "simple-bus";
diff --git a/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi b/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi index d2dbc3f39263..94212ce097ed 100644 --- a/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi +++ b/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi @@ -24,11 +24,6 @@ bank-width = <4>; };
- v2m_video_ram: vram@2,00000000 { - compatible = "arm,vexpress-vram"; - reg = <2 0x00000000 0x00800000>; - }; - ethernet@2,02000000 { compatible = "smsc,lan91c111"; reg = <2 0x02000000 0x10000>; @@ -187,38 +182,16 @@ interrupts = <14>; clocks = <&v2m_oscclk1>, <&v2m_clk24mhz>; clock-names = "clcdclk", "apb_pclk"; - arm,pl11x,framebuffer = <0x18000000 0x00180000>; - memory-region = <&v2m_video_ram>; - max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */ + /* 800x600 16bpp @36MHz works fine */ + max-memory-bandwidth = <54000000>; + memory-region = <&vram>;
port { - v2m_clcd_pads: endpoint { - remote-endpoint = <&v2m_clcd_panel>; + clcd_pads: endpoint { + remote-endpoint = <&vga_panel_in>; arm,pl11x,tft-r0g0b0-pads = <0 8 16>; }; }; - - panel { - compatible = "panel-dpi"; - - port { - v2m_clcd_panel: endpoint { - remote-endpoint = <&v2m_clcd_pads>; - }; - }; - - panel-timing { - clock-frequency = <63500127>; - hactive = <1024>; - hback-porch = <152>; - hfront-porch = <48>; - hsync-len = <104>; - vactive = <768>; - vback-porch = <23>; - vfront-porch = <3>; - vsync-len = <4>; - }; - }; };
virtio-block@130000 { diff --git a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts index 38880380e0fa..8981c3d2ff18 100644 --- a/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts +++ b/arch/arm64/boot/dts/arm/vexpress-v2f-1xv7-ca53x2.dts @@ -65,6 +65,20 @@ reg = <0 0x80000000 0 0x80000000>; /* 2GB @ 2GB */ };
+ reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + /* Chipselect 2 is physically at 0x18000000 */ + vram: vram@18000000 { + /* 8 MB of designated video RAM */ + compatible = "shared-dma-pool"; + reg = <0 0x18000000 0 0x00800000>; + no-map; + }; + }; + gic: interrupt-controller@2c001000 { compatible = "arm,gic-400"; #interrupt-cells = <3>;