linux-kernel - Re: [PATCH v13 3/4] riscv: dts: thead: th1520: Add IMG BXM-4-64 GPU node

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Message-ID: <aLDQjq9U_mDvMTJo@gen8>
Date: Thu, 28 Aug 2025 23:56:30 +0200
From: Drew Fustini <fustini@...nel.org>
To: Matt Coster <matt.coster@...tec.com>
Cc: Michal Wilczynski <m.wilczynski@...sung.com>,
	Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Frank Binns <frank.binns@...tec.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v13 3/4] riscv: dts: thead: th1520: Add IMG BXM-4-64 GPU
 node

On Wed, Aug 27, 2025 at 03:08:01PM -0700, Drew Fustini wrote:
> On Fri, Aug 22, 2025 at 01:43:53PM -0700, Drew Fustini wrote:
> > On Fri, Aug 22, 2025 at 12:20:17AM +0200, Michal Wilczynski wrote:
> > > Add a device tree node for the IMG BXM-4-64 GPU present in the T-HEAD
> > > TH1520 SoC used by the Lichee Pi 4A board. This node enables support for
> > > the GPU using the drm/imagination driver.
> > > 
> > > By adding this node, the kernel can recognize and initialize the GPU,
> > > providing graphics acceleration capabilities on the Lichee Pi 4A and
> > > other boards based on the TH1520 SoC.
> > > 
> > > Add fixed clock gpu_mem_clk, as the MEM clock on the T-HEAD SoC can't be
> > > controlled programatically.
> > > 
> > > Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
> > > Reviewed-by: Drew Fustini <drew@...7.com>
> > > Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> > > Acked-by: Matt Coster <matt.coster@...tec.com>
> > > Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
> > > ---
> > >  arch/riscv/boot/dts/thead/th1520.dtsi | 21 +++++++++++++++++++++
> > >  1 file changed, 21 insertions(+)
> > 
> > I've applied this to thead-dt-for-next [1]:
> > 
> > 0f78e44fb857 ("riscv: dts: thead: th1520: Add IMG BXM-4-64 GPU node")
> > 
> > Thanks,
> > Drew
> > 
> > [1] https://git.kernel.org/pub/scm/linux/kernel/git/fustini/linux.git/log/?h=thead-dt-for-next
> 
> Hi Matt,
> 
> Do you know when the dt binding patch will be applied to
> the drm-misc/for-linux-next tree?
> 
> I applied the dts patch but it is creating a warning in next right now.
> If the binding won't show up soon in drm-misc, then I'll remove this dts
> patch from next as dtbs_check is now failing in next. I can add it back
> once the binding makes it to next.

I've now removed this patch from thead-dt-for-next and will add it back
once the bindings show up in next.

Thanks,
Drew