Add support for SDHC adapter identification and configuration during board init.
Signed-off-by: Yangbo Lu yangbo.lu@nxp.com --- board/freescale/common/qixis.h | 11 ++++++++++- board/freescale/lx2160a/lx2160a.c | 36 ++++++++++++++++++++++++++++++++++-- 2 files changed, 44 insertions(+), 3 deletions(-)
diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h index ac5abc3..93638d2 100644 --- a/board/freescale/common/qixis.h +++ b/board/freescale/common/qixis.h @@ -36,7 +36,12 @@ struct qixis { u8 gdc; u8 gdd; /* DCM Debug Data Register,0x17 */ u8 dmack; - u8 res1[6]; + u8 res1; + u8 sdhc1; + u8 sdhc2; + u8 stat_pres3; + u8 los_stat; + u8 usb_ctl; u8 watch; /* Watchdog Register,0x1F */ u8 pwr_ctl[2]; /* Power Control Register,0x20 */ u8 res2[2]; @@ -117,6 +122,7 @@ void qixis_write_i2c(unsigned int reg, u8 value);
/* Use for SDHC adapter card type identification and operation */ #define QIXIS_SDID_MASK 0x07 + #define QIXIS_ESDHC_ADAPTER_TYPE_EMMC45 0x1 /* eMMC Card Rev4.5 */ #define QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY 0x2 /* SD/MMC Legacy Card */ #define QIXIS_ESDHC_ADAPTER_TYPE_EMMC44 0x3 /* eMMC Card Rev4.4 */ @@ -125,6 +131,9 @@ void qixis_write_i2c(unsigned int reg, u8 value); #define QIXIS_ESDHC_ADAPTER_TYPE_SD 0x6 /* SD Card Rev2.0 3.0 */ #define QIXIS_ESDHC_NO_ADAPTER 0x7 /* No Card is Present*/
+#define QIXIS_SDHC1_S1V3 0x80 /* SDHC1: SDHC1 3.3V power control */ +#define QIXIS_SDHC1_VS 0x30 /* BRDCFG11: route to SDHC1_VS */ + #define QIXIS_SDCLKIN 0x08 #define QIXIS_SDCLKOUT 0x02 #define QIXIS_DAT5_6_7 0X02 diff --git a/board/freescale/lx2160a/lx2160a.c b/board/freescale/lx2160a/lx2160a.c index 73e05ee..97e72b1 100644 --- a/board/freescale/lx2160a/lx2160a.c +++ b/board/freescale/lx2160a/lx2160a.c @@ -18,6 +18,7 @@ #include <fdt_support.h> #include <linux/bitops.h> #include <linux/libfdt.h> +#include <linux/delay.h> #include <fsl-mc/fsl_mc.h> #include <env_internal.h> #include <efi_loader.h> @@ -379,7 +380,7 @@ int checkboard(void) */ u8 qixis_esdhc_detect_quirk(void) { - /* for LX2160AQDS res1[1] @ offset 0x1A is SDHC1 Control/Status (SDHC1) + /* * SDHC1 Card ID: * Specifies the type of card installed in the SDHC1 adapter slot. * 000= (reserved) @@ -391,10 +392,35 @@ u8 qixis_esdhc_detect_quirk(void) * 110= SDCard V2/V3 adapter installed. * 111= no adapter is installed. */ - return ((QIXIS_READ(res1[1]) & QIXIS_SDID_MASK) != + return ((QIXIS_READ(sdhc1) & QIXIS_SDID_MASK) != QIXIS_ESDHC_NO_ADAPTER); }
+static void esdhc_adapter_card_ident(void) +{ + u8 card_id, val; + + val = QIXIS_READ(sdhc1); + card_id = val & QIXIS_SDID_MASK; + + switch (card_id) { + case QIXIS_ESDHC_ADAPTER_TYPE_SD: + /* Power cycle to card */ + val &= ~QIXIS_SDHC1_S1V3; + QIXIS_WRITE(sdhc1, val); + mdelay(1); + val |= QIXIS_SDHC1_S1V3; + QIXIS_WRITE(sdhc1, val); + /* Route to SDHC1_VS */ + val = QIXIS_READ(brdcfg[11]); + val |= QIXIS_SDHC1_VS; + QIXIS_WRITE(brdcfg[11], val); + break; + default: + break; + } +} + int config_board_mux(void) { u8 reg11, reg5, reg13; @@ -501,6 +527,12 @@ int config_board_mux(void)
return 0; } + +int board_early_init_r(void) +{ + esdhc_adapter_card_ident(); + return 0; +} #elif defined(CONFIG_TARGET_LX2160ARDB) int config_board_mux(void) {