From: Simon Glass <sjg@chromium.org>
Date: Wed, 15 Apr 2015 03:03:27 +0000 (-0600)
Subject: tegra: Provide a function to allow LCD PMIC setup
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=8277636420970777310c467b554c39d171ef969b;p=u-boot.git

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 914d8b956d..83f9f472c9 100644
--- 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 b5a69dfbbc..4cc23ef616 100644
--- 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