[U-Boot] [Patch 3/7] TQMa6: add SPI support

[Markus Niebel]

From: Markus Niebel <Markus.Niebel at tqs.de>

This patch adds the support for SPI,
the serial flash on TQMa6<x> and the two additional
CS on MBa6

Signed-off-by: Markus Niebel <Markus.Niebel at tq-group.com>
---
 board/tqc/tqma6/tqma6.c      |   27 +++++++++++++++++++++++++++
 board/tqc/tqma6/tqma6_mba6.c |   24 ++++++++++++++++++++++++
 include/configs/tqma6.h      |   14 ++++++++++++++
 3 files changed, 65 insertions(+)

diff --git a/board/tqc/tqma6/tqma6.c b/board/tqc/tqma6/tqma6.c
index 66fbc06..7c737d1 100644
--- a/board/tqc/tqma6/tqma6.c
+++ b/board/tqc/tqma6/tqma6.c
@@ -37,6 +37,9 @@ DECLARE_GLOBAL_DATA_PTR;
 #define GPIO_IN_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
 	PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
 
+#define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+	PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
 int dram_init(void)
 {
 	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
@@ -118,6 +121,28 @@ int board_mmc_init(bd_t *bis)
 	return 0;
 }
 
+static iomux_v3_cfg_t const tqma6_ecspi1_pads[] = {
+	/* SS1 */
+	NEW_PAD_CTRL(MX6_PAD_EIM_D19__GPIO3_IO19, SPI_PAD_CTRL),
+	NEW_PAD_CTRL(MX6_PAD_EIM_D16__ECSPI1_SCLK, SPI_PAD_CTRL),
+	NEW_PAD_CTRL(MX6_PAD_EIM_D17__ECSPI1_MISO, SPI_PAD_CTRL),
+	NEW_PAD_CTRL(MX6_PAD_EIM_D18__ECSPI1_MOSI, SPI_PAD_CTRL),
+};
+
+static unsigned const tqma6_ecspi1_cs[] = {
+	IMX_GPIO_NR(3, 19),
+};
+
+static void tqma6_iomuxc_spi(void)
+{
+	unsigned i;
+
+	for (i = 0; i < ARRAY_SIZE(tqma6_ecspi1_cs); ++i)
+		gpio_direction_output(tqma6_ecspi1_cs[i], 1);
+	imx_iomux_v3_setup_multiple_pads(tqma6_ecspi1_pads,
+					 ARRAY_SIZE(tqma6_ecspi1_pads));
+}
+
 int board_early_init_f(void)
 {
 	return tqma6_bb_board_early_init_f();
@@ -128,6 +153,8 @@ int board_init(void)
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 
+	tqma6_iomuxc_spi();
+
 	tqma6_bb_board_init();
 
 	return 0;
diff --git a/board/tqc/tqma6/tqma6_mba6.c b/board/tqc/tqma6/tqma6_mba6.c
index c30f379..94df68f 100644
--- a/board/tqc/tqma6/tqma6_mba6.c
+++ b/board/tqc/tqma6/tqma6_mba6.c
@@ -45,6 +45,9 @@ DECLARE_GLOBAL_DATA_PTR;
 #define GPIO_IN_PAD_CTRL  (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
 	PAD_CTL_DSE_40ohm   | PAD_CTL_HYS)
 
+#define SPI_PAD_CTRL (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+	PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
 #if defined(CONFIG_MX6Q)
 
 #define IOMUX_SW_PAD_CTRL_GRP_DDR_TYPE_RGMII	0x02e0790
@@ -200,6 +203,26 @@ int tqma6_bb_board_mmc_init(bd_t *bis)
 	return 0;
 }
 
+static iomux_v3_cfg_t const mba6_ecspi1_pads[] = {
+	NEW_PAD_CTRL(MX6_PAD_EIM_D24__GPIO3_IO24, SPI_PAD_CTRL),
+	NEW_PAD_CTRL(MX6_PAD_EIM_D25__GPIO3_IO25, SPI_PAD_CTRL),
+};
+
+static unsigned const mba6_ecspi1_cs[] = {
+	IMX_GPIO_NR(3, 24),
+	IMX_GPIO_NR(3, 25),
+};
+
+static void mba6_setup_iomuxc_spi(void)
+{
+	unsigned i;
+
+	for (i = 0; i < ARRAY_SIZE(mba6_ecspi1_cs); ++i)
+		gpio_direction_output(mba6_ecspi1_cs[i], 1);
+	imx_iomux_v3_setup_multiple_pads(mba6_ecspi1_pads,
+					 ARRAY_SIZE(mba6_ecspi1_pads));
+}
+
 int board_phy_config(struct phy_device *phydev)
 {
 #if defined(CONFIG_MX6Q)
@@ -279,6 +302,7 @@ int tqma6_bb_board_early_init_f(void)
 
 int tqma6_bb_board_init(void)
 {
+	mba6_setup_iomuxc_spi();
 	/* do it here - to have reset completed */
 	mba6_setup_iomuxc_enet();
 
diff --git a/include/configs/tqma6.h b/include/configs/tqma6.h
index 5f7b1a9..c5c5741 100644
--- a/include/configs/tqma6.h
+++ b/include/configs/tqma6.h
@@ -47,6 +47,20 @@
 #define CONFIG_MXC_GPIO
 #define CONFIG_MXC_UART
 
+/* SPI */
+#define CONFIG_CMD_SPI
+#define CONFIG_MXC_SPI
+
+/* SPI Flash */
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_STMICRO
+
+#define CONFIG_CMD_SF
+#define CONFIG_SF_DEFAULT_BUS	0
+#define CONFIG_SF_DEFAULT_CS	(0 | (IMX_GPIO_NR(3, 19) << 8))
+#define CONFIG_SF_DEFAULT_SPEED	50000000
+#define CONFIG_SF_DEFAULT_MODE	(SPI_MODE_0)
+
 /* MMC Configs */
 #define CONFIG_FSL_ESDHC
 #define CONFIG_FSL_USDHC
-- 
1.7.9.5