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[97.120.122.6]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-306dd12b4d5sm13372486a91.25.2025.04.14.19.04.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Apr 2025 19:04:31 -0700 (PDT) Date: Mon, 14 Apr 2025 19:04:29 -0700 From: Drew Fustini To: Michal Wilczynski Cc: mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, guoren@kernel.org, wefu@redhat.com, jassisinghbrar@gmail.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, frank.binns@imgtec.com, matt.coster@imgtec.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, ulf.hansson@linaro.org, jszhang@kernel.org, p.zabel@pengutronix.de, m.szyprowski@samsung.com, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-pm@vger.kernel.org Subject: Re: [PATCH v5 19/21] riscv: dts: thead: Introduce power domain nodes with aon firmware Message-ID: References: <20250219140239.1378758-1-m.wilczynski@samsung.com> <20250219140239.1378758-20-m.wilczynski@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250219140239.1378758-20-m.wilczynski@samsung.com> On Wed, Feb 19, 2025 at 03:02:37PM +0100, Michal Wilczynski wrote: > The DRM Imagination GPU requires a power-domain driver. In the T-HEAD > TH1520 SoC implements power management capabilities through the E902 > core, which can be communicated with through the mailbox, using firmware > protocol. > > Add AON node, which servers as a power-domain controller. > > Signed-off-by: Michal Wilczynski > --- > arch/riscv/boot/dts/thead/th1520.dtsi | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi > index 197df1f32b25..474f31576a1b 100644 > --- a/arch/riscv/boot/dts/thead/th1520.dtsi > +++ b/arch/riscv/boot/dts/thead/th1520.dtsi > @@ -6,6 +6,7 @@ > > #include > #include > +#include > > / { > compatible = "thead,th1520"; > @@ -229,6 +230,13 @@ stmmac_axi_config: stmmac-axi-config { > snps,blen = <0 0 64 32 0 0 0>; > }; > > + aon: aon { > + compatible = "thead,th1520-aon"; > + mboxes = <&mbox_910t 1>; > + mbox-names = "aon"; > + #power-domain-cells = <1>; > + }; > + > soc { > compatible = "simple-bus"; > interrupt-parent = <&plic>; > -- > 2.34.1 > Reviewed-by: Drew Fustini I tested this on top of 6.15-rc1 and found no issues. -Drew