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[2003:dc:d3e4:8404:35df:acfc:a97e:56ea]) by smtp.googlemail.com with ESMTPSA id y65sm50416969wmb.5.2017.01.19.06.58.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 19 Jan 2017 06:58:46 -0800 (PST) From: Martin Blumenstingl To: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, robh+dt@kernel.org, mark.rutland@arm.com, khilman@baylibre.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-clk@vger.kernel.org Subject: [PATCH v3 4/4] ARM64: dts: meson: meson-gx: add the SAR ADC Date: Thu, 19 Jan 2017 15:58:22 +0100 Message-Id: <20170119145822.26239-5-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170119145822.26239-1-martin.blumenstingl@googlemail.com> References: <20170115224221.15510-1-martin.blumenstingl@googlemail.com> <20170119145822.26239-1-martin.blumenstingl@googlemail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170119_070008_616764_0605F857 X-CRM114-Status: UNSURE ( 9.16 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: narmstrong@baylibre.com, Martin Blumenstingl , catalin.marinas@arm.com, mturquette@baylibre.com, will.deacon@arm.com, carlo@caione.org, sboyd@codeaurora.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Add the SAR ADC to meson-gxbb.dtsi and meson-gxl.dtsi. GXBB provides a 10-bit ADC while GXL (and GXM, which uses the same ADC as GXL) provides a 12-bit ADC. Some boards use resistor ladder buttons connected through one of the ADC channels. On newer devices (GXL and GXM) some boards use pull-ups/downs to change the resistance (and thus the ADC value) on of the ADC channels to indicate the board revision. Signed-off-by: Martin Blumenstingl Tested-by: Neil Armstrong Reviewed-by: Andreas Färber --- arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 8 ++++++++ arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 10 ++++++++++ arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 10 ++++++++++ 3 files changed, 28 insertions(+) diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi index 99e6a8d5cb9e..55abfb74aab2 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi @@ -255,6 +255,14 @@ status = "disabled"; }; + saradc: adc@8680 { + compatible = "amlogic,meson-saradc"; + #io-channel-cells = <1>; + status = "disabled"; + reg = <0x0 0x8680 0x0 0x34>; + interrupts = ; + }; + pwm_ef: pwm@86c0 { compatible = "amlogic,meson-gx-pwm", "amlogic,meson-gxbb-pwm"; reg = <0x0 0x086c0 0x0 0x10>; diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi index 39a774ad83ce..04b3324bc132 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi @@ -490,6 +490,16 @@ clocks = <&clkc CLKID_I2C>; }; +&saradc { + compatible = "amlogic,meson-gxbb-saradc", "amlogic,meson-saradc"; + clocks = <&xtal>, + <&clkc CLKID_SAR_ADC>, + <&clkc CLKID_SANA>, + <&clkc CLKID_SAR_ADC_CLK>, + <&clkc CLKID_SAR_ADC_SEL>; + clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel"; +}; + &sd_emmc_a { clocks = <&clkc CLKID_SD_EMMC_A>, <&xtal>, diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi index bdf2305a2e25..7c72dbcef1ba 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi @@ -340,6 +340,16 @@ clocks = <&clkc CLKID_I2C>; }; +&saradc { + compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc"; + clocks = <&xtal>, + <&clkc CLKID_SAR_ADC>, + <&clkc CLKID_SANA>, + <&clkc CLKID_SAR_ADC_CLK>, + <&clkc CLKID_SAR_ADC_SEL>; + clock-names = "clkin", "core", "sana", "adc_clk", "adc_sel"; +}; + &sd_emmc_a { clocks = <&clkc CLKID_SD_EMMC_A>, <&xtal>,