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[2a02:8388:e6ca:5780:e161:768d:5c97:84d0]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fc56eff84sm255659435e9.1.2026.09.21.08.09.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 08:09:17 -0700 (PDT) From: Andrei Lalaev Date: Mon, 21 Sep 2026 17:08:59 +0200 Subject: [PATCH 1/2] riscv: dts: sophgo: cv1800b-milkv-duo: drop reserved memory node 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260921-sophgo-remove-coprocessor-node-v1-1-ace29446b327@gmail.com> References: <20260921-sophgo-remove-coprocessor-node-v1-0-ace29446b327@gmail.com> In-Reply-To: <20260921-sophgo-remove-coprocessor-node-v1-0-ace29446b327@gmail.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yao Zi Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, sophgo@lists.linux.dev, linux-kernel@vger.kernel.org, Andrei Lalaev X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1790003355; l=917; i=andrey.lalaev@gmail.com; s=20260901; h=from:subject:message-id; bh=7oCgxgnMTJm72ksYvBvCCDiMxSWPCHawhVNGVG3gnF0=; b=/HfpHWWsl0W+IWEQi4abC2w6SqzvmKlMQckSkNlWUn5dc9Mj2OzdmT7rYT+JYx8lh26QfJ78Q 6nk39nHIi6TCAUn4XyySgyaRyJzuiXrG/1Lw3F+tpSB5erRjmrskv3Y X-Developer-Key: i=andrey.lalaev@gmail.com; a=ed25519; pk=YHk+K3q98GV/1CigmrEAQ+Vc0o+GlFWt3j94jvrEh6o= The current FSBL can load firmware to any address and can also disable the coprocessor. Therefore, FSBL should modify the device tree at runtime. Remove the node accordingly. Signed-off-by: Andrei Lalaev --- arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts b/arch/riscv/= boot/dts/sophgo/cv1800b-milkv-duo.dts index 0e6d79e6e3a4..02848bae2e16 100644 --- a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts +++ b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts @@ -22,17 +22,6 @@ aliases { chosen { stdout-path =3D "serial0:115200n8"; }; - - reserved-memory { - #address-cells =3D <1>; - #size-cells =3D <1>; - ranges; - - coprocessor_rtos: region@83f40000 { - reg =3D <0x83f40000 0xc0000>; - no-map; - }; - }; }; =20 &osc { --=20 2.55.0 From nobody Thu Sep 24 20:33:42 2026 Received: from mail-wm2-f12.google.com (mail-wm2-f12.google.com [74.125.225.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 506624A4EEB for ; Mon, 21 Sep 2026 15:09:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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[2a02:8388:e6ca:5780:e161:768d:5c97:84d0]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fc56eff84sm255659435e9.1.2026.09.21.08.09.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 08:09:18 -0700 (PDT) From: Andrei Lalaev Date: Mon, 21 Sep 2026 17:09:00 +0200 Subject: [PATCH 2/2] riscv: dts: sophgo: sg2002-milkv-duo256m: drop reserved memory node 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260921-sophgo-remove-coprocessor-node-v1-2-ace29446b327@gmail.com> References: <20260921-sophgo-remove-coprocessor-node-v1-0-ace29446b327@gmail.com> In-Reply-To: <20260921-sophgo-remove-coprocessor-node-v1-0-ace29446b327@gmail.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yao Zi Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, sophgo@lists.linux.dev, linux-kernel@vger.kernel.org, Andrei Lalaev X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1790003355; l=930; i=andrey.lalaev@gmail.com; s=20260901; h=from:subject:message-id; bh=2hLVo973TL+IdDgfOfnl6vgwTnq6FuS1dy3gn60sYLo=; b=8vQxbbljLHi5ctbjXGnvpx0s7hUcmZwoEqChv9f7UFEt2WHJsgauYQxdmsMj3k2QtvPq4Px1E aqvlQO9Z73xCWko1NMLNcKEsCu4lGQsSo65J/OH2o+UPbItGZHFeTDN X-Developer-Key: i=andrey.lalaev@gmail.com; a=ed25519; pk=YHk+K3q98GV/1CigmrEAQ+Vc0o+GlFWt3j94jvrEh6o= The current FSBL can load firmware to any address and can also disable the coprocessor. Therefore, FSBL should modify the device tree at runtime. Remove the node accordingly. Signed-off-by: Andrei Lalaev --- arch/riscv/boot/dts/sophgo/sg2002-milkv-duo256m.dts | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/arch/riscv/boot/dts/sophgo/sg2002-milkv-duo256m.dts b/arch/ris= cv/boot/dts/sophgo/sg2002-milkv-duo256m.dts index a2797c0bd767..d4e86c15664e 100644 --- a/arch/riscv/boot/dts/sophgo/sg2002-milkv-duo256m.dts +++ b/arch/riscv/boot/dts/sophgo/sg2002-milkv-duo256m.dts @@ -36,17 +36,6 @@ led-0 { linux,default-trigger =3D "heartbeat"; }; }; - - reserved-memory { - #address-cells =3D <1>; - #size-cells =3D <1>; - ranges; - - coprocessor_rtos: region@8fe00000 { - reg =3D <0x8fe00000 0x200000>; - no-map; - }; - }; }; =20 &osc { --=20 2.55.0