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[34.34.173.130]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38a1c84705esm4227874f8f.44.2024.12.20.06.45.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Dec 2024 06:45:57 -0800 (PST) From: Tudor Ambarus Date: Fri, 20 Dec 2024 14:45:45 +0000 Subject: [PATCH v3 2/4] arm64: dts: exynos: gs101: add AP to APM mailbox node Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241220-gs101-acpm-dt-v3-2-642d64daa5d1@linaro.org> References: <20241220-gs101-acpm-dt-v3-0-642d64daa5d1@linaro.org> In-Reply-To: <20241220-gs101-acpm-dt-v3-0-642d64daa5d1@linaro.org> To: Peter Griffin , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alim Akhtar , Catalin Marinas , Will Deacon Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, kernel-team@android.com, willmcvicker@google.com, peter.griffin@linaro.org, daniel.lezcano@linaro.org, vincent.guittot@linaro.org, ulf.hansson@linaro.org, arnd@arndb.de, Jassi Brar , Tudor Ambarus X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1734705955; l=1282; i=tudor.ambarus@linaro.org; s=20241212; h=from:subject:message-id; bh=ksJ+kZjL8uLlN+FZ+pHkeFoebJsDUcUmZPaIlmDO4Og=; b=x0Ev+HpwVYqbwB+I6AVvSeZI9hA8fjFh/u8hIaK1sJWwZeeE1MvacpEYn9gzDmAWTMUsWEdNZ ecBCUxDslrZAhS1a9R+KuoBbFFAZG+4joMBRs9YtU8+yeFqxZube1LL X-Developer-Key: i=tudor.ambarus@linaro.org; a=ed25519; pk=uQzE0NXo3dIjeowMTOPCpIiPHEz12IA/MbyzrZVh9WI= GS101 has 14 mailbox controllers. Add the AP to APM mailbox node. Mailbox controllers have a shared register that can be used for passing the mailbox messages. The AP to APM mailbox controller is used just as a doorbell mechanism. It raises interrupt to the firmware after the mailbox message has been written to SRAM where the TX/RX rings are defined. Signed-off-by: Tudor Ambarus --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi index 1441e9a252c2..6947dd081a0e 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -1445,6 +1445,15 @@ wakeup-interrupt-controller { }; }; + ap2apm_mailbox: mailbox@17610000 { + compatible = "google,gs101-mbox"; + reg = <0x17610000 0x1000>; + clocks = <&cmu_apm CLK_GOUT_APM_MAILBOX_APM_AP_PCLK>; + clock-names = "pclk"; + interrupts = ; + #mbox-cells = <0>; + }; + pinctrl_gsactrl: pinctrl@17940000 { compatible = "google,gs101-pinctrl"; reg = <0x17940000 0x00001000>;