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rockchip: pinctrl: rk3368: add GMAC (RGMII only) support

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To add GMAC (Gigabit Ethernet) support (limited to RGMII only at this
point), we need support for additional pin-configuration.  This commit
adds the pinctrl support for GMAC in RGMII mode:
 * adds a PERIPH_ID_GMAC and the mapping from IRQ number to PERIPH_ID
 * configures the RGMII pins

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philipp Tomsich 2017-07-14 20:00:58 +02:00
parent 8f362dbb41
commit 5282a3f162
1 changed files with 36 additions and 0 deletions
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36
drivers/pinctrl/rockchip/pinctrl_rk3368.c
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@ -52,6 +52,33 @@ static void pinctrl_rk3368_uart_config(struct rk3368_pinctrl_priv *priv,
}
}
#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
static void pinctrl_rk3368_gmac_config(struct rk3368_grf *grf, int gmac_id)
{
rk_clrsetreg(&grf->gpio3b_iomux,
GPIO3B0_MASK | GPIO3B1_MASK |
GPIO3B2_MASK | GPIO3B5_MASK |
GPIO3B6_MASK | GPIO3B7_MASK,
GPIO3B0_MAC_TXD0 | GPIO3B1_MAC_TXD1 |
GPIO3B2_MAC_TXD2 | GPIO3B5_MAC_TXEN |
GPIO3B6_MAC_TXD3 | GPIO3B7_MAC_RXD0);
rk_clrsetreg(&grf->gpio3c_iomux,
GPIO3C0_MASK | GPIO3C1_MASK |
GPIO3C2_MASK | GPIO3C3_MASK |
GPIO3C4_MASK | GPIO3C5_MASK |
GPIO3C6_MASK,
GPIO3C0_MAC_RXD1 | GPIO3C1_MAC_RXD2 |
GPIO3C2_MAC_RXD3 | GPIO3C3_MAC_MDC |
GPIO3C4_MAC_RXDV | GPIO3C5_MAC_RXEN |
GPIO3C6_MAC_CLK);
rk_clrsetreg(&grf->gpio3d_iomux,
GPIO3D0_MASK | GPIO3D1_MASK |
GPIO3D4_MASK,
GPIO3D0_MAC_MDIO | GPIO3D1_MAC_RXCLK |
GPIO3D4_MAC_TXCLK);
}
#endif
static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
{
struct rk3368_pinctrl_priv *priv = dev_get_priv(dev);
@ -65,6 +92,11 @@ static int rk3368_pinctrl_request(struct udevice *dev, int func, int flags)
case PERIPH_ID_UART4:
pinctrl_rk3368_uart_config(priv, func);
break;
#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
case PERIPH_ID_GMAC:
pinctrl_rk3368_gmac_config(priv->grf, func);
break;
#endif
default:
return -EINVAL;
}
@ -94,6 +126,10 @@ static int rk3368_pinctrl_get_periph_id(struct udevice *dev,
return PERIPH_ID_UART1;
case 55:
return PERIPH_ID_UART0;
#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
case 27:
return PERIPH_ID_GMAC;
#endif
}
return -ENOENT;