sunxi: Configure only LVDS pins instead of all LCD pins when LVDS interface selected
The behavior before this patch would attempt to configure the mux
setting for pins 0 to 27 on PORTD to all be setting 3 for LVDS. The
LVDS interface actually only uses pins 18 to 27 and not pins 0 to 27
as in the parallel LCD interface. This patch restricts the
configuration to only the relevant pins 18 to 27 on PORTD.
This was tested on a sun8i A33 tablet with an LVDS screen. MMC1 has
the capability to use pins 2 to 7 on PORTD and the mux on those pins
was being inadvertently set to setting 3 for MMC functionality which
this patch corrects.
Signed-off-by: Lawrence Yu <lyu@micile.com>
[hdegoede@redhat.com: Only apply this change to A23 / A33]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 9fee66a..56f6c8e 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -767,7 +767,11 @@
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
int bp, clk_delay, clk_div, clk_double, pin, total, val;
+#if defined CONFIG_MACH_SUN8I && defined CONFIG_VIDEO_LCD_IF_LVDS
+ for (pin = SUNXI_GPD(18); pin <= SUNXI_GPD(27); pin++) {
+#else
for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++) {
+#endif
#ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LCD0);
#endif