[U-Boot] [PATCH v2 08/15] cgtqmx6eval: Add SPI NOR flash support

[Otavio Salvador]

Add SPI NOR support:

=> sf probe
SF: Detected SST25VF032B with page size 256 Bytes, erase size 4 KiB, total 4 MiB

Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
---

Changes in v2: None

 board/congatec/cgtqmx6eval/cgtqmx6eval.c | 23 +++++++++++++++++++++++
 include/configs/cgtqmx6eval.h            | 10 ++++++++++
 2 files changed, 33 insertions(+)

diff --git a/board/congatec/cgtqmx6eval/cgtqmx6eval.c b/board/congatec/cgtqmx6eval/cgtqmx6eval.c
index 1ae126c..197bb89 100644
--- a/board/congatec/cgtqmx6eval/cgtqmx6eval.c
+++ b/board/congatec/cgtqmx6eval/cgtqmx6eval.c
@@ -27,6 +27,10 @@ DECLARE_GLOBAL_DATA_PTR;
 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW |\
 	PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
 
+#define SPI_PAD_CTRL (PAD_CTL_HYS |				\
+	PAD_CTL_SPEED_MED |		\
+	PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+
 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -77,11 +81,24 @@ static iomux_v3_cfg_t const usdhc4_pads[] = {
 	MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 };
 
+static iomux_v3_cfg_t const ecspi1_pads[] = {
+	MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
+	MX6_PAD_EIM_D19__GPIO3_IO19 | MUX_PAD_CTRL(NO_PAD_CTRL),
+};
+
 static void setup_iomux_uart(void)
 {
 	imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
 }
 
+void setup_spinor(void)
+{
+	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
+	gpio_direction_output(IMX_GPIO_NR(3, 19), 0);
+}
+
 #ifdef CONFIG_FSL_ESDHC
 static struct fsl_esdhc_cfg usdhc_cfg[] = {
 	{USDHC2_BASE_ADDR},
@@ -158,6 +175,7 @@ int board_mmc_init(bd_t *bis)
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
+	setup_spinor();
 
 	return 0;
 }
@@ -177,6 +195,11 @@ int checkboard(void)
 	return 0;
 }
 
+int board_spi_cs_gpio(unsigned bus, unsigned cs)
+{
+	return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -EINVAL;
+}
+
 #ifdef CONFIG_CMD_BMODE
 static const struct boot_mode board_boot_modes[] = {
 	/* 4 bit bus width */
diff --git a/include/configs/cgtqmx6eval.h b/include/configs/cgtqmx6eval.h
index 9d9e388..b0ceffc 100644
--- a/include/configs/cgtqmx6eval.h
+++ b/include/configs/cgtqmx6eval.h
@@ -29,6 +29,16 @@
 /* MMC Configs */
 #define CONFIG_SYS_FSL_ESDHC_ADDR      0
 
+/* SPI NOR */
+#define CONFIG_CMD_SF
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_STMICRO
+#define CONFIG_SPI_FLASH_SST
+#define CONFIG_MXC_SPI
+#define CONFIG_SF_DEFAULT_BUS		0
+#define CONFIG_SF_DEFAULT_SPEED		20000000
+#define CONFIG_SF_DEFAULT_MODE		(SPI_MODE_0)
+
 /* Miscellaneous commands */
 #define CONFIG_CMD_BMODE
 
-- 
2.4.5