pinctrl: meson: meson8b: add the eth_rxd2 and eth_rxd3 pins

Gigabit Ethernet requires the Ethernet TXD0..3 and RXD0..3 data lines.
Add the missing eth_rxd2 and eth_rxd3 definitions so we don't have to
rely on the bootloader to set them up correctly.

The vendor u-boot sources for Odroid-C1 use the following Ethernet
pinmux configuration:
  SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_6, 0x3f4f);
  SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_7, 0xf00000);
This translates to the following pin groups in the mainline kernel:
- register 6 bit  0: eth_rxd1 (DIF_0_P)
- register 6 bit  1: eth_rxd0 (DIF_0_N)
- register 6 bit  2: eth_rx_dv (DIF_1_P)
- register 6 bit  3: eth_rx_clk (DIF_1_N)
- register 6 bit  6: eth_tx_en (DIF_3_P)
- register 6 bit  8: eth_ref_clk (DIF_3_N)
- register 6 bit  9: eth_mdc (DIF_4_P)
- register 6 bit 10: eth_mdio_en (DIF_4_N)
- register 6 bit 11: eth_tx_clk (GPIOH_9)
- register 6 bit 12: eth_txd2 (GPIOH_8)
- register 6 bit 13: eth_txd3 (GPIOH_7)
- register 7 bit 20: eth_txd0_0 (GPIOH_6)
- register 7 bit 21: eth_txd1_0 (GPIOH_5)
- register 7 bit 22: eth_rxd3 (DIF_2_P)
- register 7 bit 23: eth_rxd2 (DIF_2_N)

All functions except eth_rxd2 and eth_rxd3 are already supported by the
pinctrl-meson8b driver.

Suggested-by: Jianxin Pan <jianxin.pan@amlogic.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Reviewed-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c
index c69ca95b1ad5..84938bd73ac2 100644
--- a/drivers/pinctrl/meson/pinctrl-meson8b.c
+++ b/drivers/pinctrl/meson/pinctrl-meson8b.c
@@ -346,6 +346,8 @@ static const unsigned int eth_rx_dv_pins[]	= { DIF_1_P };
 static const unsigned int eth_rx_clk_pins[]     = { DIF_1_N };
 static const unsigned int eth_txd0_1_pins[]     = { DIF_2_P };
 static const unsigned int eth_txd1_1_pins[]     = { DIF_2_N };
+static const unsigned int eth_rxd3_pins[]       = { DIF_2_P };
+static const unsigned int eth_rxd2_pins[]       = { DIF_2_N };
 static const unsigned int eth_tx_en_pins[]      = { DIF_3_P };
 static const unsigned int eth_ref_clk_pins[]    = { DIF_3_N };
 static const unsigned int eth_mdc_pins[]        = { DIF_4_P };
@@ -599,6 +601,8 @@ static struct meson_pmx_group meson8b_cbus_groups[] = {
         GROUP(eth_ref_clk,      6,      8),
         GROUP(eth_mdc,          6,      9),
         GROUP(eth_mdio_en,      6,      10),
+        GROUP(eth_rxd3,         7,      22),
+        GROUP(eth_rxd2,         7,      23),
 };
 
 static struct meson_pmx_group meson8b_aobus_groups[] = {
@@ -748,7 +752,7 @@ static const char * const ethernet_groups[] = {
         "eth_tx_clk", "eth_tx_en", "eth_txd1_0", "eth_txd1_1",
         "eth_txd0_0", "eth_txd0_1", "eth_rx_clk", "eth_rx_dv",
         "eth_rxd1", "eth_rxd0", "eth_mdio_en", "eth_mdc", "eth_ref_clk",
-        "eth_txd2", "eth_txd3"
+        "eth_txd2", "eth_txd3", "eth_rxd3", "eth_rxd2"
 };
 
 static const char * const i2c_a_groups[] = {