[U-Boot] [PATCH v2 1/3] wandboard: Add card detection for SOM MicroSD card
This add support to identify if the card is connected or not; so it does not try to communicate with the controller if no card is available.
Signed-off-by: Otavio Salvador otavio@ossystems.com.br --- Changes in v2: None
arch/arm/include/asm/arch-mx6/mx6dl_pins.h | 1 + board/wandboard/wandboard.c | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+)
diff --git a/arch/arm/include/asm/arch-mx6/mx6dl_pins.h b/arch/arm/include/asm/arch-mx6/mx6dl_pins.h index 9846f1b..b8e6bf0 100644 --- a/arch/arm/include/asm/arch-mx6/mx6dl_pins.h +++ b/arch/arm/include/asm/arch-mx6/mx6dl_pins.h @@ -93,6 +93,7 @@ enum { MX6_PAD_EIM_D28__I2C1_SDA = IOMUX_PAD(0x0544, 0x0174, 1 | IOMUX_CONFIG_SION, 0x086C, 1, 0), MX6_PAD_EIM_D28__GPIO_3_28 = IOMUX_PAD(0x0544, 0x0174, 5, 0x0000, 0, 0), MX6_PAD_EIM_D29__GPIO_3_29 = IOMUX_PAD(0x0548, 0x0178, 5, 0x0000, 0, 0), + MX6_PAD_EIM_DA9__GPIO_3_9 = IOMUX_PAD(0x0590, 0x01C0, 5, 0x0000, 0, 0), MX6_PAD_ENET_MDC__ENET_MDC = IOMUX_PAD(0x05B8, 0x01E8, 1, 0x0000, 0, 0), MX6_PAD_ENET_MDIO__ENET_MDIO = IOMUX_PAD(0x05BC, 0x01EC, 1, 0x0810, 0, 0), MX6_PAD_ENET_REF_CLK__ENET_TX_CLK = IOMUX_PAD(0x05C0, 0x01F0, 1, 0x0000, 0, 0), diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c index ac7b89a..a8f6ba2 100644 --- a/board/wandboard/wandboard.c +++ b/board/wandboard/wandboard.c @@ -52,6 +52,8 @@ static iomux_v3_cfg_t const uart1_pads[] = { MX6_PAD_CSI0_DAT11__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), };
+#define USDHC3_CD_GPIO IMX_GPIO_NR(3, 9) + static iomux_v3_cfg_t const usdhc3_pads[] = { MX6_PAD_SD3_CLK__USDHC3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD3_CMD__USDHC3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), @@ -59,6 +61,8 @@ static iomux_v3_cfg_t const usdhc3_pads[] = { MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + /* SOM MicroSD Card Detect */ + MX6_PAD_EIM_DA9__GPIO_3_9 | MUX_PAD_CTRL(NO_PAD_CTRL), };
static iomux_v3_cfg_t const enet_pads[] = { @@ -100,12 +104,27 @@ static struct fsl_esdhc_cfg usdhc_cfg[1] = { {USDHC3_BASE_ADDR}, };
+int board_mmc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv; + int ret = 0; + + switch (cfg->esdhc_base) { + case USDHC3_BASE_ADDR: + ret = !gpio_get_value(USDHC3_CD_GPIO); + break; + } + + return ret; +} + int board_mmc_init(bd_t *bis) { imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); usdhc_cfg[0].max_bus_width = 4; + gpio_direction_input(USDHC3_CD_GPIO);
return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); }
Allow use of the carrier board MicroSD card available in the Wandboard; this allow for loading alternative system from the other card for testing or upgrade proposes.
Signed-off-by: Otavio Salvador otavio@ossystems.com.br --- Changes in v2: - Return -EINVAL when trying to initialize a wrong controller
arch/arm/include/asm/arch-mx6/mx6dl_pins.h | 7 ++++ board/wandboard/wandboard.c | 59 +++++++++++++++++++++++++++--- include/configs/wandboard.h | 1 + 3 files changed, 61 insertions(+), 6 deletions(-)
diff --git a/arch/arm/include/asm/arch-mx6/mx6dl_pins.h b/arch/arm/include/asm/arch-mx6/mx6dl_pins.h index b8e6bf0..8cedbdc 100644 --- a/arch/arm/include/asm/arch-mx6/mx6dl_pins.h +++ b/arch/arm/include/asm/arch-mx6/mx6dl_pins.h @@ -103,6 +103,7 @@ enum { MX6_PAD_GPIO_17__GPIO_7_12 = IOMUX_PAD(0x05E8, 0x0218, 5, 0x0000, 0, 0), MX6_PAD_GPIO_18__GPIO_7_13 = IOMUX_PAD(0x05EC, 0x021C, 5, 0x0000, 0, 0), MX6_PAD_GPIO_19__GPIO_4_5 = IOMUX_PAD(0x05F0, 0x0220, 5, 0x0000, 0, 0), + MX6_PAD_GPIO_2__GPIO_1_2 = IOMUX_PAD(0x05F4, 0x0224, 5, 0x0000, 0, 0), MX6_PAD_GPIO_5__GPIO_1_5 = IOMUX_PAD(0x0600, 0x0230, 5, 0x0000, 0, 0), MX6_PAD_GPIO_5__I2C3_SCL = IOMUX_PAD(0x0600, 0x0230, 6 | IOMUX_CONFIG_SION, 0x0878, 2, 0), MX6_PAD_KEY_COL3__I2C2_SCL = IOMUX_PAD(0x0638, 0x0250, 4 | IOMUX_CONFIG_SION, 0x0870, 1, 0), @@ -135,8 +136,14 @@ enum { MX6_PAD_RGMII_TD3__ENET_RGMII_TD3 = IOMUX_PAD(0x06B8, 0x02D0, 1, 0x0000, 0, 0), MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL = IOMUX_PAD(0x06BC, 0x02D4, 1, 0x0000, 0, 0), MX6_PAD_RGMII_TXC__ENET_RGMII_TXC = IOMUX_PAD(0x06C0, 0x02D8, 1, 0x0000, 0, 0), + MX6_PAD_SD1_CLK__USDHC1_CLK = IOMUX_PAD(0x06C4, 0x02DC, 0, 0x0928, 1, 0), + MX6_PAD_SD1_CMD__USDHC1_CMD = IOMUX_PAD(0x06C8, 0x02E0, 0 | IOMUX_CONFIG_SION, 0x0000, 0, 0), MX6_PAD_SD1_CMD__GPIO_1_18 = IOMUX_PAD(0x06C8, 0x02E0, 5, 0x0000, 0, 0), MX6_PAD_SD1_DAT3__GPIO_1_21 = IOMUX_PAD(0x06D8, 0x02F0, 5, 0x0000, 0, 0), + MX6_PAD_SD1_DAT0__USDHC1_DAT0 = IOMUX_PAD(0x06CC, 0x02E4, 0, 0x0000, 0, 0), + MX6_PAD_SD1_DAT1__USDHC1_DAT1 = IOMUX_PAD(0x06D0, 0x02E8, 0, 0x0000, 0, 0), + MX6_PAD_SD1_DAT2__USDHC1_DAT2 = IOMUX_PAD(0x06D4, 0x02EC, 0, 0x0000, 0, 0), + MX6_PAD_SD1_DAT3__USDHC1_DAT3 = IOMUX_PAD(0x06D8, 0x02F0, 0, 0x0000, 0, 0), MX6_PAD_SD3_CLK__USDHC3_CLK = IOMUX_PAD(0x06F4, 0x030C, 0, 0x0934, 1, 0), MX6_PAD_SD3_CMD__USDHC3_CMD = IOMUX_PAD(0x06F8, 0x0310, 0 | IOMUX_CONFIG_SION, 0x0000, 0, 0), MX6_PAD_SD3_DAT0__USDHC3_DAT0 = IOMUX_PAD(0x06FC, 0x0314, 0, 0x0000, 0, 0), diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c index a8f6ba2..c9f53cd 100644 --- a/board/wandboard/wandboard.c +++ b/board/wandboard/wandboard.c @@ -52,6 +52,18 @@ static iomux_v3_cfg_t const uart1_pads[] = { MX6_PAD_CSI0_DAT11__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL), };
+iomux_v3_cfg_t const usdhc1_pads[] = { + MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT0__USDHC1_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT1__USDHC1_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT2__USDHC1_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + MX6_PAD_SD1_DAT3__USDHC1_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL), + /* Carrier MicroSD Card Detect */ + MX6_PAD_GPIO_2__GPIO_1_2 | MUX_PAD_CTRL(NO_PAD_CTRL), +}; + +#define USDHC1_CD_GPIO IMX_GPIO_NR(1, 2) #define USDHC3_CD_GPIO IMX_GPIO_NR(3, 9)
static iomux_v3_cfg_t const usdhc3_pads[] = { @@ -100,8 +112,9 @@ static void setup_iomux_enet(void) gpio_set_value(ETH_PHY_RESET, 1); }
-static struct fsl_esdhc_cfg usdhc_cfg[1] = { +static struct fsl_esdhc_cfg usdhc_cfg[2] = { {USDHC3_BASE_ADDR}, + {USDHC1_BASE_ADDR}, };
int board_mmc_getcd(struct mmc *mmc) @@ -110,6 +123,9 @@ int board_mmc_getcd(struct mmc *mmc) int ret = 0;
switch (cfg->esdhc_base) { + case USDHC1_BASE_ADDR: + ret = !gpio_get_value(USDHC1_CD_GPIO); + break; case USDHC3_BASE_ADDR: ret = !gpio_get_value(USDHC3_CD_GPIO); break; @@ -120,13 +136,44 @@ int board_mmc_getcd(struct mmc *mmc)
int board_mmc_init(bd_t *bis) { - imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads)); + int i; + int ret = 0;
- usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); - usdhc_cfg[0].max_bus_width = 4; - gpio_direction_input(USDHC3_CD_GPIO); + /* + * According to the board_mmc_init() the following map is done: + * (U-boot device node) (Physical Port) + * mmc0 SOM MicroSD + * mmc1 Carrier board MicroSD + */ + for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) { + switch (i) { + case 0: + imx_iomux_v3_setup_multiple_pads( + usdhc3_pads, ARRAY_SIZE(usdhc3_pads)); + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); + usdhc_cfg[0].max_bus_width = 4; + gpio_direction_input(USDHC3_CD_GPIO); + break; + case 1: + imx_iomux_v3_setup_multiple_pads( + usdhc1_pads, ARRAY_SIZE(usdhc1_pads)); + usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); + usdhc_cfg[1].max_bus_width = 4; + gpio_direction_input(USDHC1_CD_GPIO); + break; + default: + printf("ERROR: you configured more USDHC controllers" + "(%d) than supported by the board\n", i + 1); + return -EINVAL; + } + + ret |= fsl_esdhc_initialize(bis, &usdhc_cfg[i]); + } + + if (ret) + printf("ERROR: failed to initialize mmc dev %d\n", i);
- return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); + return ret; }
static int mx6_rgmii_rework(struct phy_device *phydev) diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h index 120e3f6..161b400 100644 --- a/include/configs/wandboard.h +++ b/include/configs/wandboard.h @@ -57,6 +57,7 @@ /* MMC Configuration */ #define CONFIG_FSL_ESDHC #define CONFIG_FSL_USDHC +#define CONFIG_SYS_FSL_USDHC_NUM 2 #define CONFIG_SYS_FSL_ESDHC_ADDR 0
#define CONFIG_MMC
Adds support for 'bmode' command which let user to choose where to boot from; this allows U-Boot to load system from another storage without messing with jumpers.
Signed-off-by: Otavio Salvador otavio@ossystems.com.br --- Changes in v2: None
board/wandboard/wandboard.c | 19 +++++++++++++++++++ include/configs/wandboard.h | 3 +++ 2 files changed, 22 insertions(+)
diff --git a/board/wandboard/wandboard.c b/board/wandboard/wandboard.c index c9f53cd..d85094b 100644 --- a/board/wandboard/wandboard.c +++ b/board/wandboard/wandboard.c @@ -16,6 +16,7 @@ #include <asm/arch/sys_proto.h> #include <asm/gpio.h> #include <asm/imx-common/iomux-v3.h> +#include <asm/imx-common/boot_mode.h> #include <asm/io.h> #include <asm/sizes.h> #include <common.h> @@ -228,6 +229,24 @@ int board_early_init_f(void) return 0; }
+#ifdef CONFIG_CMD_BMODE +static const struct boot_mode board_boot_modes[] = { + /* 4 bit bus width */ + {"mmc0", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)}, + {"mmc1", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)}, + {NULL, 0}, +}; +#endif + +int board_late_init(void) +{ +#ifdef CONFIG_CMD_BMODE + add_board_boot_modes(board_boot_modes); +#endif + + return 0; +} + int board_init(void) { /* address of boot parameters */ diff --git a/include/configs/wandboard.h b/include/configs/wandboard.h index 161b400..4cb9f8d 100644 --- a/include/configs/wandboard.h +++ b/include/configs/wandboard.h @@ -32,6 +32,7 @@ #define CONFIG_SYS_MALLOC_LEN (3 * SZ_1M)
#define CONFIG_BOARD_EARLY_INIT_F +#define CONFIG_BOARD_LATE_INIT #define CONFIG_MXC_GPIO
#define CONFIG_MXC_UART @@ -47,6 +48,8 @@
#undef CONFIG_CMD_IMLS
+#define CONFIG_CMD_BMODE + #define CONFIG_BOOTDELAY 5
#define CONFIG_SYS_MEMTEST_START 0x10000000
participants (1)
-
Otavio Salvador