| Message ID | 20190411105720.32357-1-peron.clem@gmail.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add Allwinner H6 Mali Midgard GPU | expand |
Hi, On Thu, 11 Apr 2019 at 14:30, Maxime Ripard <maxime.ripard@bootlin.com> wrote: > > On Thu, Apr 11, 2019 at 12:57:14PM +0200, Clément Péron wrote: > > Some SoCs adds a bus clock gate to the Mali Midgard GPU. > > > > Add the binding for the bus clock. > > > > Signed-off-by: Icenowy Zheng <icenowy@aosc.io> > > Signed-off-by: Clément Péron <peron.clem@gmail.com> > > I'm not quite sure what you did there. If Icenowy is the author and > you're sending that commit on her behalf, then she should have the > authorship of that commit. Indeed bad cherry pick, I will change the author sorry for that. Clément > > If you're the author of that commit, then we Icenowy's SoB is there? > > Maxime > > -- > Maxime Ripard, Bootlin > Embedded Linux and Kernel engineering > https://bootlin.com
Hi! Dne četrtek, 11. april 2019 ob 14:32:23 CEST je Maxime Ripard napisal(a): > On Thu, Apr 11, 2019 at 12:57:12PM +0200, Clément Péron wrote: > > Hi, > > > > The Allwinner H6 has a Mali-T720 MP2. The drivers are > > out-of-tree so this series only introduce the dt-bindings. > > > > The first patch is from Neil Amstrong and has been already > > merged in linux-amlogic. It is required for this series. > > > > The second patch is from Icenowy Zheng where I changed the > > order has required by Rob Herring. > > See: https://patchwork.kernel.org/patch/10699829/ > > > > The GPU opp table was taken from Jernej Škrabec's patch > > on LibreELEC.tv. > > One valuable information here would be which stack did you use, > panfrost and mesa or the ARM stack? If so, with which driver and which > blob? I'm using similar binding (different clock and interrupt names, but otherwise same) for quiet some time now on LibreELEC with ARM proprietary userspace and kernel space driver (32-bit GBM version) and it works well. It's true that I'm using OPP table, but most (if not all) of the time GPU is set to lowest setting as there is not much to do when rendering GUI. Best regards, Jernej
Hi, On Thu, 11 Apr 2019 at 17:01, Jernej Škrabec <jernej.skrabec@siol.net> wrote: > > Hi! > > Dne četrtek, 11. april 2019 ob 14:32:23 CEST je Maxime Ripard napisal(a): > > On Thu, Apr 11, 2019 at 12:57:12PM +0200, Clément Péron wrote: > > > Hi, > > > > > > The Allwinner H6 has a Mali-T720 MP2. The drivers are > > > out-of-tree so this series only introduce the dt-bindings. > > > > > > The first patch is from Neil Amstrong and has been already > > > merged in linux-amlogic. It is required for this series. > > > > > > The second patch is from Icenowy Zheng where I changed the > > > order has required by Rob Herring. > > > See: https://patchwork.kernel.org/patch/10699829/ > > > > > > The GPU opp table was taken from Jernej Škrabec's patch > > > on LibreELEC.tv. > > > > One valuable information here would be which stack did you use, > > panfrost and mesa or the ARM stack? If so, with which driver and which > > blob? All of this work has be done by Jernej so he could answer better than me. He uses the ARM stack r22p0-01rel0 + patches https://github.com/LibreELEC/LibreELEC.tv/commit/5273f889964c42e88fe02289290c3c6cb6086770 Blob are also from Jernej too (taken from ???) : https://github.com/jernejsk/H6-mali-userspace Regards, Clement > > I'm using similar binding (different clock and interrupt names, but otherwise > same) for quiet some time now on LibreELEC with ARM proprietary userspace and > kernel space driver (32-bit GBM version) and it works well. > > It's true that I'm using OPP table, but most (if not all) of the time GPU is > set to lowest setting as there is not much to do when rendering GUI. > > Best regards, > Jernej > >
Dne četrtek, 11. april 2019 ob 17:27:52 CEST je Maxime Ripard napisal(a): > On Thu, Apr 11, 2019 at 05:23:25PM +0200, Jernej Škrabec wrote: > > Dne četrtek, 11. april 2019 ob 17:20:04 CEST je Clément Péron napisal(a): > > > Hi, > > > > > > On Thu, 11 Apr 2019 at 17:05, Jernej Škrabec <jernej.skrabec@siol.net> > > > > wrote: > > > > Dne četrtek, 11. april 2019 ob 12:57:16 CEST je Clément Péron napisal(a): > > > > > Add the mali gpu node to the H6 device-tree. > > > > > > > > > > Signed-off-by: Clément Péron <peron.clem@gmail.com> > > > > > --- > > > > > > > > > > arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 14 ++++++++++++++ > > > > > 1 file changed, 14 insertions(+) > > > > > > > > > > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi > > > > > b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi index > > > > > e0dc4a05c1ba..196753110434 100644 > > > > > --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi > > > > > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi > > > > > @@ -157,6 +157,20 @@ > > > > > > > > > > allwinner,sram = <&ve_sram 1>; > > > > > > > > > > }; > > > > > > > > > > + gpu: gpu@1800000 { > > > > > + compatible = "allwinner,sun50i-h6-mali", > > > > > + "arm,mali-t720"; > > > > > + reg = <0x01800000 0x4000>; > > > > > + interrupts = <GIC_SPI 84 > > > > > > > > IRQ_TYPE_LEVEL_HIGH>, > > > > > > > > > + <GIC_SPI 85 > > > > > > > > IRQ_TYPE_LEVEL_HIGH>, > > > > > > > > > + <GIC_SPI 83 > > > > > > > > IRQ_TYPE_LEVEL_HIGH>; > > > > > > > > > + interrupt-names = "job", "mmu", "gpu"; > > > > > + clocks = <&ccu CLK_GPU>, <&ccu CLK_BUS_GPU>; > > > > > + clock-names = "core", "bus"; > > > > > + resets = <&ccu RST_BUS_GPU>; > > > > > + status = "disabled"; > > > > > > > > Usually self sufficient peripherals are enabled by default in DTSI. > > > > > > I follow the other Mali Midgard (rk3399, rk3288) syntax. > > > But I think you're right here, will go for an update I think. > > > > I quickly checked A64 and H5 DTSI and both have GPU enabled by default > > (status property is not set). > > I asked myself the same question, but the H6 seems to have a supply > wired to the GPU, while the H3 and H5 do not. So I'm not sure we want > to enable it on all the boards, even though some might have left out > the GPU supply which will result in a non-working GPU (I assume?) It's true that GPU doesn't work at all without power supply. Even worse, ARM kernel driver just hangs whole SoC if it tries to use unpowered GPU. I checked few datasheets and almost none of them have GPU power supply, except H5, where GPU is enabled by default in DTSI. Yeah, I guess it's more safe to explicitly enable it in board DT. Jernej