[U-Boot] [PATCH v3 1/2] mx6sabresd: Allow probing HSYNC, VSYNC and DISP_CLK signals

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <fabio.estevam@freescale.com>

HSYNC, VSYNC and DISP_CLK are very useful display signals for debugging.

Configure them as active pins.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Changes since v2:
- Fix typo in HSYNC
Changes since v1:
- Add a comment in the code explaining that the purpose of configuring these
pins are for debugging

 board/freescale/mx6sabresd/mx6sabresd.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
index 851cbe9..1d5bba6 100644
--- a/board/freescale/mx6sabresd/mx6sabresd.c
+++ b/board/freescale/mx6sabresd/mx6sabresd.c
@@ -135,6 +135,12 @@ static void setup_spi(void)
 	imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
 }
 
+iomux_v3_cfg_t const di0_pads[] = {
+	MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,	/* DISP0_CLK */
+	MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,		/* DISP0_HSYNC */
+	MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,		/* DISP0_VSYNC */
+};
+
 static void setup_iomux_uart(void)
 {
 	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
@@ -386,6 +392,9 @@ static void setup_display(void)
 	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 	int reg;
 
+	/* Setup HSYNC, VSYNC, DISP_CLK for debugging purposes */
+	imx_iomux_v3_setup_multiple_pads(di0_pads, ARRAY_SIZE(di0_pads));
+
 	enable_ipu_clock();
 	imx_setup_hdmi();
 
-- 
1.8.1.2