Hi Linus,
I was planning to apply this and observed few things.
On 28/05/18 13:26, Linus Walleij wrote:
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 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 | 44 ++++++------------ arch/arm/boot/dts/vexpress-v2m.dtsi | 45 ++++++------------- 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 | 41 +++++++---------- arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts | 14 ++++++ .../boot/dts/arm/rtsm_ve-motherboard.dtsi | 37 +++------------ 8 files changed, 105 insertions(+), 118 deletions(-)
diff --git a/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi b/arch/arm/boot/dts/vexpress-v2m-rs1.dtsi index 7b8ff5b3b912..69f6a9436325 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>;@@ -224,6 +219,14 @@ dvi-transmitter@39 { compatible = "sil,sii9022-tpi", "sil,sii9022"; reg = <0x39>;
ports {port@0 {
May need reg=<0> here, otherwise DTC might complain ? [...]
diff --git a/arch/arm/boot/dts/vexpress-v2m.dtsi b/arch/arm/boot/dts/vexpress-v2m.dtsi index 9cd5e146abd5..067d84bc61c0 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>;@@ -224,6 +219,14 @@ dvi-transmitter@39 { compatible = "sil,sii9022-tpi", "sil,sii9022"; reg = <0x39>;
ports {port@0 {
Ditto
dvi_bridge_in: endpoint {remote-endpoint = <&clcd_pads>;};};}; }; dvi-transmitter@60 {
[...]
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;};- };
I need to think hard yet, but was hoping to keep these in the motherboard files itself if possible. I don't like the way we need to specify the absolute address here.
hdlcd@2b000000 { compatible = "arm,hdlcd"; reg = <0 0x2b000000 0 0x1000>;
[...]
diff --git a/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi b/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi index 1134e5d8df18..737d0a0c0854 100644 --- a/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi +++ b/arch/arm64/boot/dts/arm/rtsm_ve-motherboard.dtsi @@ -23,11 +23,6 @@ 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>;
@@ -186,38 +181,16 @@ 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 = <&dvi_bridge_in>;
I can't find dvi_bridge_in for this RTSM/FVP model, also not sure if I2C or DVI transmitter is supported on them.
Liviu, any idea ?
Also you my need to fix arm64 express-v2f-1xv7-ca53x2.dts as it includes vexpress-v2m-rs1.dtsi