armv8: ls1012ardb: support hwconfig for eSDHC1 enabling

I2C reading for DIP switch setting is not reliable for LS1012ARDB
RevD and later versions. This patch is to add hwconfig support to
enable/disable eSDHC1 manually for these boards. Also drop 'status'
fix-up for eSDHC0 and leave it as it is. It shouldn't always be
fixed up with 'okay'.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index 421b0a7..286f9d8 100644 (file)
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -152,34 +152,49 @@ int board_init(void)
 
 int esdhc_status_fixup(void *blob, const char *compat)
 {
-       char esdhc0_path[] = "/soc/esdhc@1560000";
        char esdhc1_path[] = "/soc/esdhc@1580000";
-       u8 io = 0;
+       bool sdhc2_en = false;
        u8 mux_sdhc2;
-
-       do_fixup_by_path(blob, esdhc0_path, "status", "okay",
-                        sizeof("okay"), 1);
+       u8 io = 0;
 
        i2c_set_bus_num(0);
 
-       /*
-        * The I2C IO-expander for mux select is used to control the muxing
-        * of various onboard interfaces.
-        *
-        * IO1[3:2] indicates SDHC2 interface demultiplexer select lines.
-        *      00 - SDIO wifi
-        *      01 - GPIO (to Arduino)
-        *      10 - eMMC Memory
-        *      11 - SPI
-        */
-       if (i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_0, 1, &io, 1) < 0) {
+       /* IO1[7:3] is the field of board revision info. */
+       if (i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_1, 1, &io, 1) < 0) {
                printf("Error reading i2c boot information!\n");
-               return 0; /* Don't want to hang() on this error */
+               return 0;
+       }
+
+       /* hwconfig method is used for RevD and later versions. */
+       if ((io & SW_REV_MASK) <= SW_REV_D) {
+#ifdef CONFIG_HWCONFIG
+               if (hwconfig("esdhc1"))
+                       sdhc2_en = true;
+#endif
+       } else {
+               /*
+                * The I2C IO-expander for mux select is used to control
+                * the muxing of various onboard interfaces.
+                *
+                * IO0[3:2] indicates SDHC2 interface demultiplexer
+                * select lines.
+                *      00 - SDIO wifi
+                *      01 - GPIO (to Arduino)
+                *      10 - eMMC Memory
+                *      11 - SPI
+                */
+               if (i2c_read(I2C_MUX_IO_ADDR, I2C_MUX_IO_0, 1, &io, 1) < 0) {
+                       printf("Error reading i2c boot information!\n");
+                       return 0;
+               }
+
+               mux_sdhc2 = (io & 0x0c) >> 2;
+               /* Enable SDHC2 only when use SDIO wifi and eMMC */
+               if (mux_sdhc2 == 2 || mux_sdhc2 == 0)
+                       sdhc2_en = true;
        }
 
-       mux_sdhc2 = (io & 0x0c) >> 2;
-       /* Enable SDHC2 only when use SDIO wifi and eMMC */
-       if (mux_sdhc2 == 2 || mux_sdhc2 == 0)
+       if (sdhc2_en)
                do_fixup_by_path(blob, esdhc1_path, "status", "okay",
                                 sizeof("okay"), 1);
        else