[U-Boot] [PATCH v2 2/2] imx:mx6sxsabresd add qspi support

[Peng.Fan at freescale.com]

Just CC Stefano Babic <sbabic at denx.de>

Regards,
Peng.

-----Original Message-----
From: u-boot-bounces at lists.denx.de [mailto:u-boot-bounces at lists.denx.de] On Behalf Of Peng Fan
Sent: Thursday, September 11, 2014 9:56 AM
To: Estevam Fabio-R49496; Li Ye-B37916
Cc: u-boot at lists.denx.de
Subject: [U-Boot] [PATCH v2 2/2] imx:mx6sxsabresd add qspi support

Configure the pad setting and enable qspi clock to support qspi flashes access.

This patch has been tested on mx6sxsabresd board.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
---

Changelog v2:
 Take Fabio's suggestion, split soc code and board code into two patches.
 This patch needs 'ARM:MX6SX Add QSPI support' patch.

 board/freescale/mx6sxsabresd/mx6sxsabresd.c | 40 +++++++++++++++++++++++++++++
 include/configs/mx6sxsabresd.h              | 14 ++++++++++
 2 files changed, 54 insertions(+)

diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index 5eaec1b..f9cad5a 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -272,11 +272,51 @@ int board_mmc_init(bd_t *bis)
 	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);  }
 
+#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);
+
+	return 0;
+}
+#endif
+
 int board_init(void)
 {
 	/* Address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 
+#ifdef CONFIG_FSL_QSPI
+	board_qspi_init();
+#endif
+
 	return 0;
 }
 
diff --git a/include/configs/mx6sxsabresd.h b/include/configs/mx6sxsabresd.h index 1eda65e..00031ec 100644
--- a/include/configs/mx6sxsabresd.h
+++ b/include/configs/mx6sxsabresd.h
@@ -201,6 +201,20 @@
 /* FLASH and environment organization */  #define CONFIG_SYS_NO_FLASH
 
+#define CONFIG_FSL_QSPI
+
+#ifdef CONFIG_FSL_QSPI
+#define CONFIG_CMD_SF
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_SPANSION
+#define CONFIG_SPI_FLASH_STMICRO
+#define CONFIG_SYS_FSL_QSPI_LE
+#define CONFIG_QSPI_BASE		QSPI2_BASE_ADDR
+#define CONFIG_QSPI_MEMMAP_BASE		QSPI2_ARB_BASE_ADDR
+#define FSL_QSPI_FLASH_SIZE		SZ_16M
+#define FSL_QSPI_FLASH_NUM		2
+#endif
+
 #define CONFIG_ENV_OFFSET		(6 * SZ_64K)
 #define CONFIG_ENV_SIZE			SZ_8K
 #define CONFIG_ENV_IS_IN_MMC
--
1.8.4


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