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[92.99.174.191]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ab6e4a326e6sm880773966b.157.2025.02.04.01.04.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Feb 2025 01:04:59 -0800 (PST) From: Alexey Charkov Date: Tue, 04 Feb 2025 13:02:28 +0400 Subject: [PATCH] arm64: dts: rockchip: switch Rock 5C to PMIC-based TSHUT reset 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: <20250204-rock-5c-tshut-v1-1-33301e4eef64@gmail.com> X-B4-Tracking: v=1; b=H4sIAKPXoWcC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyDHUUlJIzE vPSU3UzU4B8JSMDI1MDIwMT3aL85Gxd02TdkuKM0hJdQ9NksySLNEuzVBMjJaCegqLUtMwKsHn RsbW1AMMYKURfAAAA X-Change-ID: 20250204-rock-5c-tshut-15c6b8f96e42 To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Alexey Charkov X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1738659896; l=1575; i=alchark@gmail.com; s=20240125; h=from:subject:message-id; bh=NDwu4ZrRPISU9qi/wnZ2zADZ8PQ6etk8lPQhZfxwq4w=; b=Z6SwL2znsuKUTw+uTTQ1+B4YWdVoaboy494h1y9Lv187OXEHVdaqeY76XpBkIVRLSt+U0dZlv GOmN+F8BhIQBQLSlJzSTFd+S5KOTPxqIgCLxOYV/d3x82dB6jUaLcaP X-Developer-Key: i=alchark@gmail.com; a=ed25519; pk=xRO8VeD3J5jhwe0za0aHt2LDumQr8cm0Ls7Jz3YGimk= Radxa Rock 5C supports both CRU-based (default) and PMIC-based reset upon thermal runaway conditions. The former resets the SoC by internally poking the CRU from TSADC, while the latter power-cycles the whole board by pulling the PMIC reset line low in case of uncontrolled overheating. Switch to a PMIC-based reset, as the more 'thorough' of the two. Tested by temporarily setting rockchip,hw-tshut-temp to 65C to simulate overheating - this causes the board to reset when any of the on-chip temperature sensors surpasses the tshut temperature. Requires Alexander's patch [1] fixing TSADC pinctrl assignment [1] https://lore.kernel.org/r/20250130053849.4902-1-eagle.alexander923@gmai= l.com Signed-off-by: Alexey Charkov Reviewed-by: Dragan Simic --- arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts b/arch/arm64/= boot/dts/rockchip/rk3588s-rock-5c.dts index 6e56d7704cbe0dc06242cb39df56b2fc9d6bc774..00b2d87a6bce4af883a3e7c7e60= 6ea5b96c68b19 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-rock-5c.dts @@ -873,6 +873,8 @@ regulator-state-mem { }; =20 &tsadc { + rockchip,hw-tshut-mode =3D <1>; /* tshut mode 0:CRU 1:GPIO */ + rockchip,hw-tshut-polarity =3D <0>; /* tshut polarity 0:LOW 1:HIGH */ status =3D "okay"; }; =20 --- base-commit: 6399b505aad2531d6244f3e943ad384b56095710 change-id: 20250204-rock-5c-tshut-15c6b8f96e42 Best regards, --=20 Alexey Charkov