tegra: Provide a function to allow LCD PMIC setup

Some LCDs require a PMIC to be set up - add a function for this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

diff --git a/arch/arm/include/asm/arch-tegra/sys_proto.h b/arch/arm/include/asm/arch-tegra/sys_proto.h
index 914d8b9..83f9f47 100644 (file)
--- a/arch/arm/include/asm/arch-tegra/sys_proto.h
+++ b/arch/arm/include/asm/arch-tegra/sys_proto.h
@@ -17,4 +17,12 @@ void invalidate_dcache(void);
  */
 int tegra_board_id(void);
 
+/**
+ * tegra_lcd_pmic_init() - Set up the PMIC for a board
+ *
+ * @board_id: Board ID which may be used to select LCD type
+ * @return 0 if OK, -ve on error
+ */
+int tegra_lcd_pmic_init(int board_id);
+
 #endif

diff --git a/board/nvidia/common/board.c b/board/nvidia/common/board.c
index b5a69df..4cc23ef 100644 (file)
--- a/board/nvidia/common/board.c
+++ b/board/nvidia/common/board.c
@@ -100,6 +100,11 @@ int checkboard(void)
 }
 #endif /* CONFIG_DISPLAY_BOARDINFO */
 
+__weak int tegra_lcd_pmic_init(int board_it)
+{
+       return 0;
+}
+
 /*
  * Routine: board_init
  * Description: Early hardware init.
@@ -107,6 +112,7 @@ int checkboard(void)
 int board_init(void)
 {
        __maybe_unused int err;
+       __maybe_unused int board_id;
 
        /* Do clocks and UART first so that printf() works */
        clock_init();
@@ -147,6 +153,10 @@ int board_init(void)
 #endif
 
 #ifdef CONFIG_LCD
+       board_id = tegra_board_id();
+       err = tegra_lcd_pmic_init(board_id);
+       if (err)
+               return err;
        tegra_lcd_check_next_stage(gd->fdt_blob, 0);
 #endif