All the SHDIs can operate with either 3.3V or 1.8V signals, depending
on negotiation with the card.
Based on work by Wolfram Sang for the r8a7790.
Cc: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
drivers/pinctrl/sh-pfc/pfc-r8a7794.c | 34 +++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7794.c b/drivers/pinctrl/sh-pfc/pfc-r8a7794.c
index 8bc2cf0c594e..c02b367837b7 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7794.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7794.c
@@ -22,7 +22,9 @@
PORT_GP_32(3, fn, sfx), \
PORT_GP_32(4, fn, sfx), \
PORT_GP_28(5, fn, sfx), \
- PORT_GP_26(6, fn, sfx)
+ PORT_GP_CFG_24(6, fn, sfx, SH_PFC_PIN_CFG_IO_VOLTAGE), \
+ PORT_GP_1(6, 24, fn, sfx), \
+ PORT_GP_1(6, 25, fn, sfx)
enum {
PINMUX_RESERVED = 0,
@@ -5160,8 +5162,38 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
{ },
};
+static int r8a7794_pin_to_pocctrl(struct sh_pfc *pfc, unsigned int pin, u32 *pocctrl)
+{
+ if (pin < RCAR_GP_PIN(6, 0) || pin > RCAR_GP_PIN(6, 23))
+ return -EINVAL;
+
+ *pocctrl = 0xe606006c;
+
+ /* GP6_16-23 -> bits 31-24 of pocctrl
+ * GP6_06 -> bit 23 of pocctrl
+ * GP6_00-05 -> bits 22-17 of pocctrl
+ * GP6_07 -> bit 16 of pocctrl
+ * GP6_14 -> bit 15 of pocctrl
+ * GP6_08-13 -> bits 14-09 of pocctrl
+ * GP6_15 -> bit 08 of pocctrl
+ */
+ if (pin == RCAR_GP_PIN(6, 6) || pin == RCAR_GP_PIN(6, 14))
+ return 31 - 2 - (pin & 0x1f);
+ else if (pin == RCAR_GP_PIN(6, 7) || pin == RCAR_GP_PIN(6, 15))
+ return 31 - 8 - (pin & 0x1f);
+ else if (pin < RCAR_GP_PIN(6, 14))
+ return 31 - 9 - (pin & 0x1f);
+ else
+ return 31 + 16 - (pin & 0x1f);
+}
+
+static const struct sh_pfc_soc_operations r8a7794_pinmux_ops = {
+ .pin_to_pocctrl = r8a7794_pin_to_pocctrl,
+};
+
const struct sh_pfc_soc_info r8a7794_pinmux_info = {
.name = "r8a77940_pfc",
+ .ops = &r8a7794_pinmux_ops,
.unlock_reg = 0xe6060000, /* PMMR */
.function = { PINMUX_FUNCTION_BEGIN, PINMUX_FUNCTION_END },
--
2.7.0.rc3.207.g0ac5344
