arm: exynos: odroid: Fix build if BOARD_TYPES are not set

CONFIG_BOARD_TYPES is necessary for Odroid X/X2/U3 boards to detect
proper revision.  However building should succeed even without it.
While moving code around, document also the reference clock selection.

This fixes the build error without CONFIG_BOARD_TYPES:

    board/samsung/odroid/odroid.c: In function 'board_usb_init':
    board/samsung/odroid/odroid.c:473:8: error: 'gd_t' {aka 'volatile struct global_data'} has no member named 'board_type'
      if (gd->board_type == ODROID_TYPE_U3)
            ^~

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/board/samsung/odroid/odroid.c b/board/samsung/odroid/odroid.c
index 4be8cc9826c3a08616b96c6db7f89fc442a84aae..3e594fd85011c986fcc334102b666adc692062ac 100644 (file)
--- a/board/samsung/odroid/odroid.c
+++ b/board/samsung/odroid/odroid.c
@@ -470,18 +470,33 @@ struct dwc2_plat_otg_data s5pc210_otg_data = {
 
 #if defined(CONFIG_USB_GADGET) || defined(CONFIG_CMD_USB)
 
+static void set_usb3503_ref_clk(void)
+{
+#ifdef CONFIG_BOARD_TYPES
+       /*
+        * gpx3-0 chooses primary (low) or secondary (high) reference clock
+        * frequencies table.  The choice of clock is done through hard-wired
+        * REF_SEL pins.
+        * The Odroid Us have reference clock at 24 MHz (00 entry from secondary
+        * table) and Odroid Xs have it at 26 MHz (01 entry from primary table).
+        */
+       if (gd->board_type == ODROID_TYPE_U3)
+               gpio_direction_output(EXYNOS4X12_GPIO_X30, 0);
+       else
+               gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
+#else
+       /* Choose Odroid Xs frequency without board types */
+       gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
+#endif /* CONFIG_BOARD_TYPES */
+}
+
 int board_usb_init(int index, enum usb_init_type init)
 {
 #ifdef CONFIG_CMD_USB
        struct udevice *dev;
        int ret;
 
-       /* Set Ref freq 0 => 24MHz, 1 => 26MHz*/
-       /* Odroid Us have it at 24MHz, Odroid Xs at 26MHz */
-       if (gd->board_type == ODROID_TYPE_U3)
-               gpio_direction_output(EXYNOS4X12_GPIO_X30, 0);
-       else
-               gpio_direction_output(EXYNOS4X12_GPIO_X30, 1);
+       set_usb3503_ref_clk();
 
        /* Disconnect, Reset, Connect */
        gpio_direction_output(EXYNOS4X12_GPIO_X34, 0);