[U-Boot] [PATCH v2 1/2] imx: imx6sx-sdb: Enable DM QSPI driver

[Ye Li]

To support DM QSPI driver
 - Add spi0 and spi1 alias for qspi1 and qspi2.
 - Add -u-boot.dtsi to modify n25q256a at 0 and n25q256a at 1 compatible string
   to "spi-flash" and add "num-cs" property.
 - Enable DM SPI/QSPI relavent configurations
 - Remove iomux settings of qspi2 in board codes which is not needed
   for DM driver.
 - Add sf default settings. So running "sf probe" can detect the flash

Signed-off-by: Ye Li <ye.li at nxp.com>
---
Changes for v2:
 - Add imx6sx-sdb-u-boot.dtsi for u-boot specified dts changes.

 arch/arm/dts/imx6sx-sdb-u-boot.dtsi         | 16 ++++++++++++++++
 arch/arm/dts/imx6sx.dtsi                    | 12 +++++++-----
 board/freescale/mx6sxsabresd/mx6sxsabresd.c | 25 -------------------------
 configs/mx6sxsabresd_defconfig              |  7 +++++++
 include/configs/mx6sxsabresd.h              |  4 ++++
 5 files changed, 34 insertions(+), 30 deletions(-)
 create mode 100644 arch/arm/dts/imx6sx-sdb-u-boot.dtsi

diff --git a/arch/arm/dts/imx6sx-sdb-u-boot.dtsi b/arch/arm/dts/imx6sx-sdb-u-boot.dtsi
new file mode 100644
index 0000000..8e592cd
--- /dev/null
+++ b/arch/arm/dts/imx6sx-sdb-u-boot.dtsi
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 NXP
+ */
+
+&qspi2 {
+	num-cs = <2>;
+
+	flash0: n25q256a at 0 {
+		compatible = "spi-flash";
+	};
+
+	flash1: n25q256a at 1 {
+		compatible = "spi-flash";
+	};
+};
diff --git a/arch/arm/dts/imx6sx.dtsi b/arch/arm/dts/imx6sx.dtsi
index 1a473e8..8ccf264 100644
--- a/arch/arm/dts/imx6sx.dtsi
+++ b/arch/arm/dts/imx6sx.dtsi
@@ -40,11 +40,13 @@
 		serial3 = &uart4;
 		serial4 = &uart5;
 		serial5 = &uart6;
-		spi0 = &ecspi1;
-		spi1 = &ecspi2;
-		spi2 = &ecspi3;
-		spi3 = &ecspi4;
-		spi4 = &ecspi5;
+		spi0 = &qspi1;
+		spi1 = &qspi2;
+		spi2 = &ecspi1;
+		spi3 = &ecspi2;
+		spi4 = &ecspi3;
+		spi5 = &ecspi4;
+		spi6 = &ecspi5;
 		usbphy0 = &usbphy1;
 		usbphy1 = &usbphy2;
 	};
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index d56e235..3e10c7f 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -205,33 +205,8 @@ int board_mmc_get_env_dev(int devno)
 
 #ifdef CONFIG_FSL_QSPI
 
-#define QSPI_PAD_CTRL1	\
-	(PAD_CTL_SRE_FAST | PAD_CTL_SPEED_HIGH | \
-	 PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_47K_UP | PAD_CTL_DSE_40ohm)
-
-static iomux_v3_cfg_t const quadspi_pads[] = {
-	MX6_PAD_NAND_WP_B__QSPI2_A_DATA_0	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_READY_B__QSPI2_A_DATA_1	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_CE0_B__QSPI2_A_DATA_2	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_CE1_B__QSPI2_A_DATA_3	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_ALE__QSPI2_A_SS0_B		| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_CLE__QSPI2_A_SCLK		| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_DATA07__QSPI2_A_DQS	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_DATA01__QSPI2_B_DATA_0	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_DATA00__QSPI2_B_DATA_1	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_WE_B__QSPI2_B_DATA_2	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_RE_B__QSPI2_B_DATA_3	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_DATA03__QSPI2_B_SS0_B	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_DATA02__QSPI2_B_SCLK	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-	MX6_PAD_NAND_DATA05__QSPI2_B_DQS	| MUX_PAD_CTRL(QSPI_PAD_CTRL1),
-};
-
 int board_qspi_init(void)
 {
-	/* Set the iomux */
-	imx_iomux_v3_setup_multiple_pads(quadspi_pads,
-					 ARRAY_SIZE(quadspi_pads));
-
 	/* Set the clock */
 	enable_qspi_clk(1);
 
diff --git a/configs/mx6sxsabresd_defconfig b/configs/mx6sxsabresd_defconfig
index 6ea92bb..9e4b13b 100644
--- a/configs/mx6sxsabresd_defconfig
+++ b/configs/mx6sxsabresd_defconfig
@@ -14,6 +14,7 @@ CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
+CONFIG_CMD_SF=y
 CONFIG_CMD_MMC=y
 CONFIG_CMD_PART=y
 CONFIG_CMD_PCI=y
@@ -36,8 +37,14 @@ CONFIG_DM_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_DM_MMC=y
 CONFIG_FSL_ESDHC=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_SPANSION=y
+CONFIG_FSL_QSPI=y
 CONFIG_PHYLIB=y
 CONFIG_PCI=y
 CONFIG_PINCTRL=y
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h
index f5ca2fc..4506acb 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -186,6 +186,10 @@
 #define FSL_QSPI_FLASH_SIZE		SZ_32M
 #endif
 #define FSL_QSPI_FLASH_NUM		2
+#define CONFIG_SF_DEFAULT_BUS		1
+#define CONFIG_SF_DEFAULT_CS		0
+#define CONFIG_SF_DEFAULT_SPEED	40000000
+#define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
 #endif
 
 #ifndef CONFIG_SPL_BUILD
-- 
2.7.4