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Date: Mon, 28 Apr 2014 19:12:30 +0530
From: Sourav Poddar <sourav.poddar@...com>
To: <bcousson@...libre.com>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
<balbi@...com>, <tony@...mide.com>
CC: Sourav Poddar <sourav.poddar@...com>
Subject: [Resend/PATCH] arm: dts: am43x-epos: Add qspi device.
This patch adds qspi nodes for am43xx SOC devices.
Signed-off-by: Sourav Poddar <sourav.poddar@...com>
---
Note,
checpatch gives 1 warning on flash compatible string
"mx66l51235l". This flash is supported in m25p80 driver and
the driver is used for other flash devices also. Hence, each
flash compatible is not described in[1], but a genric example
is shown using spansion flash device.
[1]:
Documentation/devicetree/bindings/mtd/m25p80.txt
arch/arm/boot/dts/am4372.dtsi | 11 ++++++
arch/arm/boot/dts/am43x-epos-evm.dts | 63 ++++++++++++++++++++++++++++++++++
2 files changed, 74 insertions(+)
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 36d523a..49633ff 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -735,6 +735,17 @@
#size-cells = <1>;
status = "disabled";
};
+
+ qspi: qspi@...00000 {
+ compatible = "ti,am4372-qspi";
+ reg = <0x47900000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ ti,hwmods = "qspi";
+ interrupts = <0 138 0x4>;
+ num-cs = <4>;
+ status = "disabled";
+ };
};
};
diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index 167dbc8..25cd07c 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -138,6 +138,17 @@
0x160 (PIN_INPUT | MUX_MODE7) /* spi0_cs1.gpio0_6 */
>;
};
+
+ qspi1_default: qspi1_default {
+ pinctrl-single,pins = <
+ 0x7c (PIN_INPUT_PULLUP | MUX_MODE3)
+ 0x88 (PIN_INPUT_PULLUP | MUX_MODE2)
+ 0x90 (PIN_INPUT_PULLUP | MUX_MODE3)
+ 0x94 (PIN_INPUT_PULLUP | MUX_MODE3)
+ 0x98 (PIN_INPUT_PULLUP | MUX_MODE3)
+ 0x9c (PIN_INPUT_PULLUP | MUX_MODE3)
+ >;
+ };
};
matrix_keypad: matrix_keypad@0 {
@@ -367,3 +378,55 @@
pinctrl-0 = <&spi1_pins>;
status = "okay";
};
+
+&qspi {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&qspi1_default>;
+
+ spi-max-frequency = <48000000>;
+ m25p80@0 {
+ compatible = "mx66l51235l";
+ spi-max-frequency = <48000000>;
+ reg = <0>;
+ spi-cpol;
+ spi-cpha;
+ spi-tx-bus-width = <1>;
+ spi-rx-bus-width = <4>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ /* MTD partition table.
+ * The ROM checks the first 512KiB
+ * for a valid file to boot(XIP).
+ */
+ partition@0 {
+ label = "QSPI.U_BOOT";
+ reg = <0x00000000 0x000080000>;
+ };
+ partition@1 {
+ label = "QSPI.U_BOOT.backup";
+ reg = <0x00080000 0x00080000>;
+ };
+ partition@2 {
+ label = "QSPI.U-BOOT-SPL_OS";
+ reg = <0x00100000 0x00010000>;
+ };
+ partition@3 {
+ label = "QSPI.U_BOOT_ENV";
+ reg = <0x00110000 0x00010000>;
+ };
+ partition@4 {
+ label = "QSPI.U-BOOT-ENV.backup";
+ reg = <0x00120000 0x00010000>;
+ };
+ partition@5 {
+ label = "QSPI.KERNEL";
+ reg = <0x00130000 0x0800000>;
+ };
+ partition@6 {
+ label = "QSPI.FILESYSTEM";
+ reg = <0x00930000 0x36D0000>;
+ };
+ };
+};
--
1.7.9.5
--
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