pinephone-pro: Fix I/O port voltage (GPIO3D4A is 1.8V)

This fixes access to camera sensor over I2C during probe time in
the kernel. (Kernel will fix I/0 port voltage by itself, but the
timing depends on probe order of the drivers, so the fix can
come after the camera sensor driver already failed to probe.)

Signed-off-by: Ondrej Jirman <megi@xff.cz>
Cc: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>

diff --git a/board/pine64/pinephone-pro-rk3399/pinephone-pro-rk3399.c b/board/pine64/pinephone-pro-rk3399/pinephone-pro-rk3399.c
index eb639cd..b6ccbb9 100644 (file)
--- a/board/pine64/pinephone-pro-rk3399/pinephone-pro-rk3399.c
+++ b/board/pine64/pinephone-pro-rk3399/pinephone-pro-rk3399.c
@@ -15,7 +15,8 @@
 #include <asm/arch-rockchip/misc.h>
 #include <power/regulator.h>
 
-#define GRF_IO_VSEL_BT565_SHIFT 0
+#define GRF_IO_VSEL_BT565_GPIO2AB 1
+#define GRF_IO_VSEL_AUDIO_GPIO3D4A 2
 #define PMUGRF_CON0_VSEL_SHIFT 8
 
 #ifndef CONFIG_SPL_BUILD
@@ -48,7 +49,8 @@ static void setup_iodomain(void)
           syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
 
        /* BT565 is in 1.8v domain */
-       rk_setreg(&grf->io_vsel, 1 << GRF_IO_VSEL_BT565_SHIFT);
+       rk_setreg(&grf->io_vsel,
+                 GRF_IO_VSEL_BT565_GPIO2AB | GRF_IO_VSEL_AUDIO_GPIO3D4A);
 
        /* Set GPIO1 1.8v/3.0v source select to PMU1830_VOL */
        rk_setreg(&pmugrf->soc_con0, 1 << PMUGRF_CON0_VSEL_SHIFT);