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[34.38.134.32]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-386219098d3sm2618228f8f.70.2024.12.05.10.02.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Dec 2024 10:02:04 -0800 (PST) From: Tudor Ambarus To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, alim.akhtar@samsung.com Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, andre.draszik@linaro.org, kernel-team@android.com, willmcvicker@google.com, peter.griffin@linaro.org, javierm@redhat.com, tzimmermann@suse.de, daniel.lezcano@linaro.org, vincent.guittot@linaro.org, ulf.hansson@linaro.org, arnd@arndb.de, Tudor Ambarus Subject: [PATCH 2/4] arm64: dts: exynos: gs101: add AP to APM mailbox node Date: Thu, 5 Dec 2024 18:01:58 +0000 Message-ID: <20241205180200.203146-3-tudor.ambarus@linaro.org> X-Mailer: git-send-email 2.47.0.338.g60cca15819-goog In-Reply-To: <20241205180200.203146-1-tudor.ambarus@linaro.org> References: <20241205180200.203146-1-tudor.ambarus@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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..0970f6fc1ef5 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 { }; }; =20 + ap2apm_mailbox: mailbox@17610000 { + compatible =3D "google,gs101-acpm-mbox"; + reg =3D <0x17610000 0x1000>; + clocks =3D <&cmu_apm CLK_GOUT_APM_MAILBOX_APM_AP_PCLK>; + clock-names =3D "pclk"; + interrupts =3D ; + #mbox-cells =3D <1>; + }; + pinctrl_gsactrl: pinctrl@17940000 { compatible =3D "google,gs101-pinctrl"; reg =3D <0x17940000 0x00001000>; --=20 2.47.0.338.g60cca15819-goog