board: fsl: lx2160aqds: identify SDHC adapter during board init

Add support for SDHC adapter identification and configuration
during board init.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h
index ac5abc3..93638d2 100644 (file)
--- 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 8ec4df1..ace2a19 100644 (file)
--- 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)
 {