From: Lukasz Majewski <lukma@denx.de>
To: Shawn Guo <shawnguo@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Stefan Agner <stefan@agner.ch>,
Fabio Estevam <festevam@gmail.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Lukasz Majewski <lukma@denx.de>
Subject: [PATCH] ARM: dts: Provide support for reading ID code from MVB device (BK4)
Date: Tue, 13 Nov 2018 13:12:13 +0100 [thread overview]
Message-ID: <20181113121213.14296-1-lukma@denx.de> (raw)
The procedure to read this ID value is as follows:
rmmod spi_fsl_dspi
insmod spi-gpio.ko
echo 504 > /sys/class/gpio/export
cat /sys/class/gpio/gpio504/value
...
echo 511 > /sys/class/gpio/export
cat /sys/class/gpio/gpio511/value
rmmod spi-gpio.ko
insmod spi_fsl_dspi
Signed-off-by: Lukasz Majewski <lukma@denx.de>
---
arch/arm/boot/dts/vf610-bk4.dts | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm/boot/dts/vf610-bk4.dts b/arch/arm/boot/dts/vf610-bk4.dts
index cab95714c058..f01c735807ae 100644
--- a/arch/arm/boot/dts/vf610-bk4.dts
+++ b/arch/arm/boot/dts/vf610-bk4.dts
@@ -59,6 +59,29 @@
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
+
+ spi_gpio {
+ compatible = "spi-gpio";
+ pinctrl-0 = <&pinctrl_gpio_spi>;
+ pinctrl-names = "default";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ /* PTD12 ->RPIO[91] */
+ sck-gpios = <&gpio2 27 GPIO_ACTIVE_LOW>;
+ /* PTD10 ->RPIO[89] */
+ miso-gpios = <&gpio2 25 GPIO_ACTIVE_HIGH>;
+ num-chipselects = <0>;
+
+ 72xx165@0 {
+ compatible = "pisosr-gpio";
+ reg = <0>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ /* PTB18 -> RGPIO[40] */
+ load-gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
+ spi-max-frequency = <100000>;
+ };
+ };
};
&adc0 {
@@ -430,6 +453,14 @@
>;
};
+ pinctrl_gpio_spi: pinctrl-gpio-spi {
+ fsl,pins = <
+ VF610_PAD_PTB18__GPIO_40 0x1183
+ VF610_PAD_PTD10__GPIO_89 0x1183
+ VF610_PAD_PTD12__GPIO_91 0x1183
+ >;
+ };
+
pinctrl_i2c2: i2c2grp {
fsl,pins = <
VF610_PAD_PTA22__I2C2_SCL 0x34df
--
2.11.0
next reply other threads:[~2018-11-13 12:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-13 12:12 Lukasz Majewski [this message]
2018-11-26 14:36 ` [PATCH] ARM: dts: Provide support for reading ID code from MVB device (BK4) Shawn Guo
2018-12-03 9:33 ` Lukasz Majewski
2018-12-03 11:13 ` Fabio Estevam
2018-12-05 16:40 ` Lukasz Majewski
2018-12-09 21:50 ` [PATCH v2] ARM: dts: vf610-bk4: Provide support for reading ID code from MVB device Lukasz Majewski
2019-01-10 13:22 ` Shawn Guo
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