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[2003:f1:3724:fd00:428d:5cff:feb9:9db8]) by smtp.googlemail.com with ESMTPSA id v18sm41420617edx.30.2021.01.02.12.59.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Jan 2021 12:59:19 -0800 (PST) From: Martin Blumenstingl To: linux-remoteproc@vger.kernel.org, linux-amlogic@lists.infradead.org Cc: ohad@wizery.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, bjorn.andersson@linaro.org, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, Martin Blumenstingl Subject: [PATCH v2 5/5] ARM: dts: meson: add the AO ARC remote processor Date: Sat, 2 Jan 2021 21:59:04 +0100 Message-Id: <20210102205904.2691120-6-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210102205904.2691120-1-martin.blumenstingl@googlemail.com> References: <20210102205904.2691120-1-martin.blumenstingl@googlemail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org The 32-bit Amlogic Meson SoCs embed an ARC processor in the Always-On power domain which is typically used for managing system suspend. The memory for this ARC core is taken from the AHB SRAM area. Depending on the actual SoC a different ARC core is used: - Meson6 and earlier: some ARCv1 ISA based core (probably an ARC625) - Meson8 and later: an ARC EM4 (ARCv2 ISA) based core Add the device-tree node for this remote-processor along with the required SRAM sections, clocks and reset-lines. Also use the SoC-specific compatible string to manage any differences (should they exist). On Meson8, Meson8b and Meson8m2 the "secbus2" IO region is needed as some bits need to be programmed there. Add this IO region for those SoCs as well. Signed-off-by: Martin Blumenstingl Reviewed-by: Neil Armstrong --- arch/arm/boot/dts/meson.dtsi | 7 +++++++ arch/arm/boot/dts/meson8.dtsi | 21 +++++++++++++++++++++ arch/arm/boot/dts/meson8b.dtsi | 21 +++++++++++++++++++++ 3 files changed, 49 insertions(+) diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi index e0ca5f08d07d..8bae6ed0abb2 100644 --- a/arch/arm/boot/dts/meson.dtsi +++ b/arch/arm/boot/dts/meson.dtsi @@ -200,6 +200,13 @@ aobus: aobus@c8100000 { #size-cells = <1>; ranges = <0x0 0xc8100000 0x100000>; + ao_arc_rproc: remoteproc@1c { + compatible= "amlogic,meson-mx-ao-arc"; + reg = <0x1c 0x8>, <0x38 0x8>; + reg-names = "remap", "cpu"; + status = "disabled"; + }; + ir_receiver: ir-receiver@480 { compatible= "amlogic,meson6-ir"; reg = <0x480 0x20>; diff --git a/arch/arm/boot/dts/meson8.dtsi b/arch/arm/boot/dts/meson8.dtsi index 420324ea2ad7..157a950a55d3 100644 --- a/arch/arm/boot/dts/meson8.dtsi +++ b/arch/arm/boot/dts/meson8.dtsi @@ -369,6 +369,14 @@ mux { }; }; +&ao_arc_rproc { + compatible= "amlogic,meson8-ao-arc", "amlogic,meson-mx-ao-arc"; + amlogic,secbus2 = <&secbus2>; + sram = <&ao_arc_sram>; + resets = <&reset RESET_MEDIA_CPU>; + clocks = <&clkc CLKID_AO_MEDIA_CPU>; +}; + &cbus { reset: reset-controller@4404 { compatible = "amlogic,meson8b-reset"; @@ -496,6 +504,12 @@ mux { }; &ahb_sram { + ao_arc_sram: ao-arc-sram@0 { + compatible = "amlogic,meson8-ao-arc-sram"; + reg = <0x0 0x8000>; + pool; + }; + smp-sram@1ff80 { compatible = "amlogic,meson8-smp-sram"; reg = <0x1ff80 0x8>; @@ -631,6 +645,13 @@ &sdhc { clock-names = "clkin0", "clkin1", "clkin2", "clkin3", "pclk"; }; +&secbus { + secbus2: system-controller@4000 { + compatible = "amlogic,meson8-secbus2", "syscon"; + reg = <0x4000 0x2000>; + }; +}; + &sdio { compatible = "amlogic,meson8-sdio", "amlogic,meson-mx-sdio"; clocks = <&clkc CLKID_SDIO>, <&clkc CLKID_CLK81>; diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi index dbf7963b6c87..c02b03cbcdf4 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -320,6 +320,14 @@ mux { }; }; +&ao_arc_rproc { + compatible= "amlogic,meson8b-ao-arc", "amlogic,meson-mx-ao-arc"; + amlogic,secbus2 = <&secbus2>; + sram = <&ao_arc_sram>; + resets = <&reset RESET_MEDIA_CPU>; + clocks = <&clkc CLKID_AO_MEDIA_CPU>; +}; + &cbus { reset: reset-controller@4404 { compatible = "amlogic,meson8b-reset"; @@ -464,6 +472,12 @@ mux { }; &ahb_sram { + ao_arc_sram: ao-arc-sram@0 { + compatible = "amlogic,meson8b-ao-arc-sram"; + reg = <0x0 0x8000>; + pool; + }; + smp-sram@1ff80 { compatible = "amlogic,meson8b-smp-sram"; reg = <0x1ff80 0x8>; @@ -628,6 +642,13 @@ &sdhc { clock-names = "clkin0", "clkin1", "clkin2", "clkin3", "pclk"; }; +&secbus { + secbus2: system-controller@4000 { + compatible = "amlogic,meson8b-secbus2", "syscon"; + reg = <0x4000 0x2000>; + }; +}; + &sdio { compatible = "amlogic,meson8b-sdio", "amlogic,meson-mx-sdio"; clocks = <&clkc CLKID_SDIO>, <&clkc CLKID_CLK81>;