rockchip: pinctrl: Add rk3328 gmac pinctrl support

Need to set gmac m1 pins iomux, gmac m0 tx pins, select bit2
and bit10 at com iomux register. After that, set rgmii m1 tx
pins to 12ma drive-strength, and clean others to 2ma.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

2 files changed, 275 insertions, 1 deletions

diff --git a/arch/arm/include/asm/arch-rockchip/grf_rk3328.h b/arch/arm/include/asm/arch-rockchip/grf_rk3328.h
index 0c37f2ad18..2776cefbb2 100644
--- a/arch/arm/include/asm/arch-rockchip/grf_rk3328.h
+++ b/arch/arm/include/asm/arch-rockchip/grf_rk3328.h
@@ -131,5 +131,4 @@ struct rk3328_sgrf_regs {
 };
 check_member(rk3328_sgrf_regs, hdcp_key_access_mask, 0x2a0);
 
-
 #endif	/* __SOC_ROCKCHIP_RK3328_GRF_H__ */
diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3328.c b/drivers/pinctrl/rockchip/pinctrl_rk3328.c
index 3c2253fdaf..fa2356a7a1 100644
--- a/drivers/pinctrl/rockchip/pinctrl_rk3328.c
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3328.c
@@ -31,6 +31,37 @@ enum {
 	GPIO0A7_SEL_MASK	= 3 << GPIO0A7_SEL_SHIFT,
 	GPIO0A7_EMMC_DATA0	= 2,
 
+	/* GPIO0B_IOMUX*/
+	GPIO0B0_SEL_SHIFT	= 0,
+	GPIO0B0_SEL_MASK	= 3 << GPIO0B0_SEL_SHIFT,
+	GPIO0B0_GAMC_CLKTXM0	= 1,
+
+	GPIO0B4_SEL_SHIFT	= 8,
+	GPIO0B4_SEL_MASK	= 3 << GPIO0B4_SEL_SHIFT,
+	GPIO0B4_GAMC_TXENM0	= 1,
+
+	/* GPIO0C_IOMUX*/
+	GPIO0C0_SEL_SHIFT	= 0,
+	GPIO0C0_SEL_MASK	= 3 << GPIO0C0_SEL_SHIFT,
+	GPIO0C0_GAMC_TXD1M0	= 1,
+
+	GPIO0C1_SEL_SHIFT	= 2,
+	GPIO0C1_SEL_MASK	= 3 << GPIO0C1_SEL_SHIFT,
+	GPIO0C1_GAMC_TXD0M0	= 1,
+
+	GPIO0C6_SEL_SHIFT	= 12,
+	GPIO0C6_SEL_MASK	= 3 << GPIO0C6_SEL_SHIFT,
+	GPIO0C6_GAMC_TXD2M0	= 1,
+
+	GPIO0C7_SEL_SHIFT	= 14,
+	GPIO0C7_SEL_MASK	= 3 << GPIO0C7_SEL_SHIFT,
+	GPIO0C7_GAMC_TXD3M0	= 1,
+
+	/* GPIO0D_IOMUX*/
+	GPIO0D0_SEL_SHIFT	= 0,
+	GPIO0D0_SEL_MASK	= 3 << GPIO0D0_SEL_SHIFT,
+	GPIO0D0_GMAC_CLKM0	= 1,
+
 	GPIO0D6_SEL_SHIFT	= 12,
 	GPIO0D6_SEL_MASK	= 3 << GPIO0D6_SEL_SHIFT,
 	GPIO0D6_GPIO		= 0,
@@ -41,6 +72,69 @@ enum {
 	GPIO1A0_SEL_MASK	= 0x3fff << GPIO1A0_SEL_SHIFT,
 	GPIO1A0_CARD_DATA_CLK_CMD_DETN	= 0x1555,
 
+	/* GPIO1B_IOMUX */
+	GPIO1B0_SEL_SHIFT	= 0,
+	GPIO1B0_SEL_MASK	= 3 << GPIO1B0_SEL_SHIFT,
+	GPIO1B0_GMAC_TXD1M1	= 2,
+
+	GPIO1B1_SEL_SHIFT	= 2,
+	GPIO1B1_SEL_MASK	= 3 << GPIO1B1_SEL_SHIFT,
+	GPIO1B1_GMAC_TXD0M1	= 2,
+
+	GPIO1B2_SEL_SHIFT	= 4,
+	GPIO1B2_SEL_MASK	= 3 << GPIO1B2_SEL_SHIFT,
+	GPIO1B2_GMAC_RXD1M1	= 2,
+
+	GPIO1B3_SEL_SHIFT	= 6,
+	GPIO1B3_SEL_MASK	= 3 << GPIO1B3_SEL_SHIFT,
+	GPIO1B3_GMAC_RXD0M1	= 2,
+
+	GPIO1B4_SEL_SHIFT	= 8,
+	GPIO1B4_SEL_MASK	= 3 << GPIO1B4_SEL_SHIFT,
+	GPIO1B4_GMAC_TXCLKM1	= 2,
+
+	GPIO1B5_SEL_SHIFT	= 10,
+	GPIO1B5_SEL_MASK	= 3 << GPIO1B5_SEL_SHIFT,
+	GPIO1B5_GMAC_RXCLKM1	= 2,
+
+	GPIO1B6_SEL_SHIFT	= 12,
+	GPIO1B6_SEL_MASK	= 3 << GPIO1B6_SEL_SHIFT,
+	GPIO1B6_GMAC_RXD3M1	= 2,
+
+	GPIO1B7_SEL_SHIFT	= 14,
+	GPIO1B7_SEL_MASK	= 3 << GPIO1B7_SEL_SHIFT,
+	GPIO1B7_GMAC_RXD2M1	= 2,
+
+	/* GPIO1C_IOMUX */
+	GPIO1C0_SEL_SHIFT	= 0,
+	GPIO1C0_SEL_MASK	= 3 << GPIO1C0_SEL_SHIFT,
+	GPIO1C0_GMAC_TXD3M1	= 2,
+
+	GPIO1C1_SEL_SHIFT	= 2,
+	GPIO1C1_SEL_MASK	= 3 << GPIO1C1_SEL_SHIFT,
+	GPIO1C1_GMAC_TXD2M1	= 2,
+
+	GPIO1C3_SEL_SHIFT	= 6,
+	GPIO1C3_SEL_MASK	= 3 << GPIO1C3_SEL_SHIFT,
+	GPIO1C3_GMAC_MDIOM1	= 2,
+
+	GPIO1C5_SEL_SHIFT	= 10,
+	GPIO1C5_SEL_MASK	= 3 << GPIO1C5_SEL_SHIFT,
+	GPIO1C5_GMAC_CLKM1	= 2,
+
+	GPIO1C6_SEL_SHIFT	= 12,
+	GPIO1C6_SEL_MASK	= 3 << GPIO1C6_SEL_SHIFT,
+	GPIO1C6_GMAC_RXDVM1	= 2,
+
+	GPIO1C7_SEL_SHIFT	= 14,
+	GPIO1C7_SEL_MASK	= 3 << GPIO1C7_SEL_SHIFT,
+	GPIO1C7_GMAC_MDCM1	= 2,
+
+	/* GPIO1D_IOMUX */
+	GPIO1D1_SEL_SHIFT	= 2,
+	GPIO1D1_SEL_MASK	= 3 << GPIO1D1_SEL_SHIFT,
+	GPIO1D1_GMAC_TXENM1	= 2,
+
 	/* GPIO2A_IOMUX */
 	GPIO2A0_SEL_SHIFT	= 0,
 	GPIO2A0_SEL_MASK	= 3 << GPIO2A0_SEL_SHIFT,
@@ -118,6 +212,11 @@ enum {
 	IOMUX_SEL_UART2_M0	= 0,
 	IOMUX_SEL_UART2_M1,
 
+	IOMUX_SEL_GMAC_SHIFT	= 2,
+	IOMUX_SEL_GMAC_MASK	= 1 << IOMUX_SEL_GMAC_SHIFT,
+	IOMUX_SEL_GMAC_M0	= 0,
+	IOMUX_SEL_GMAC_M1,
+
 	IOMUX_SEL_SPI_SHIFT	= 4,
 	IOMUX_SEL_SPI_MASK	= 3 << IOMUX_SEL_SPI_SHIFT,
 	IOMUX_SEL_SPI_M0	= 0,
@@ -128,6 +227,55 @@ enum {
 	IOMUX_SEL_SDMMC_MASK	= 1 << IOMUX_SEL_SDMMC_SHIFT,
 	IOMUX_SEL_SDMMC_M0	= 0,
 	IOMUX_SEL_SDMMC_M1,
+
+	IOMUX_SEL_GMACM1_OPTIMIZATION_SHIFT	= 10,
+	IOMUX_SEL_GMACM1_OPTIMIZATION_MASK	= 1 << IOMUX_SEL_GMACM1_OPTIMIZATION_SHIFT,
+	IOMUX_SEL_GMACM1_OPTIMIZATION_BEFORE	= 0,
+	IOMUX_SEL_GMACM1_OPTIMIZATION_AFTER,
+
+	/* GRF_GPIO1B_E */
+	GRF_GPIO1B0_E_SHIFT = 0,
+	GRF_GPIO1B0_E_MASK = 3 << GRF_GPIO1B0_E_SHIFT,
+	GRF_GPIO1B1_E_SHIFT = 2,
+	GRF_GPIO1B1_E_MASK = 3 << GRF_GPIO1B1_E_SHIFT,
+	GRF_GPIO1B2_E_SHIFT = 4,
+	GRF_GPIO1B2_E_MASK = 3 << GRF_GPIO1B2_E_SHIFT,
+	GRF_GPIO1B3_E_SHIFT = 6,
+	GRF_GPIO1B3_E_MASK = 3 << GRF_GPIO1B3_E_SHIFT,
+	GRF_GPIO1B4_E_SHIFT = 8,
+	GRF_GPIO1B4_E_MASK = 3 << GRF_GPIO1B4_E_SHIFT,
+	GRF_GPIO1B5_E_SHIFT = 10,
+	GRF_GPIO1B5_E_MASK = 3 << GRF_GPIO1B5_E_SHIFT,
+	GRF_GPIO1B6_E_SHIFT = 12,
+	GRF_GPIO1B6_E_MASK = 3 << GRF_GPIO1B6_E_SHIFT,
+	GRF_GPIO1B7_E_SHIFT = 14,
+	GRF_GPIO1B7_E_MASK = 3 << GRF_GPIO1B7_E_SHIFT,
+
+	/*  GRF_GPIO1C_E */
+	GRF_GPIO1C0_E_SHIFT = 0,
+	GRF_GPIO1C0_E_MASK = 3 << GRF_GPIO1C0_E_SHIFT,
+	GRF_GPIO1C1_E_SHIFT = 2,
+	GRF_GPIO1C1_E_MASK = 3 << GRF_GPIO1C1_E_SHIFT,
+	GRF_GPIO1C3_E_SHIFT = 6,
+	GRF_GPIO1C3_E_MASK = 3 << GRF_GPIO1C3_E_SHIFT,
+	GRF_GPIO1C5_E_SHIFT = 10,
+	GRF_GPIO1C5_E_MASK = 3 << GRF_GPIO1C5_E_SHIFT,
+	GRF_GPIO1C6_E_SHIFT = 12,
+	GRF_GPIO1C6_E_MASK = 3 << GRF_GPIO1C6_E_SHIFT,
+	GRF_GPIO1C7_E_SHIFT = 14,
+	GRF_GPIO1C7_E_MASK = 3 << GRF_GPIO1C7_E_SHIFT,
+
+	/*  GRF_GPIO1D_E */
+	GRF_GPIO1D1_E_SHIFT = 2,
+	GRF_GPIO1D1_E_MASK = 3 << GRF_GPIO1D1_E_SHIFT,
+};
+
+/* GPIO Bias drive strength settings */
+enum GPIO_BIAS {
+	GPIO_BIAS_2MA = 0,
+	GPIO_BIAS_4MA,
+	GPIO_BIAS_8MA,
+	GPIO_BIAS_12MA,
 };
 
 struct rk3328_pinctrl_priv {
@@ -313,6 +461,124 @@ static void pinctrl_rk3328_sdmmc_config(struct rk3328_grf_regs *grf,
 	}
 }
 
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+static void pinctrl_rk3328_gmac_config(struct rk3328_grf_regs *grf, int gmac_id)
+{
+	switch (gmac_id) {
+	case PERIPH_ID_GMAC:
+		/* set rgmii m1 pins mux */
+		rk_clrsetreg(&grf->gpio1b_iomux,
+			     GPIO1B0_SEL_MASK |
+			     GPIO1B1_SEL_MASK |
+			     GPIO1B2_SEL_MASK |
+			     GPIO1B3_SEL_MASK |
+			     GPIO1B4_SEL_MASK |
+			     GPIO1B5_SEL_MASK |
+			     GPIO1B6_SEL_MASK |
+			     GPIO1B7_SEL_MASK,
+			     GPIO1B0_GMAC_TXD1M1 << GPIO1B0_SEL_SHIFT |
+			     GPIO1B1_GMAC_TXD0M1 << GPIO1B1_SEL_SHIFT |
+			     GPIO1B2_GMAC_RXD1M1 << GPIO1B2_SEL_SHIFT |
+			     GPIO1B3_GMAC_RXD0M1 << GPIO1B3_SEL_SHIFT |
+			     GPIO1B4_GMAC_TXCLKM1 << GPIO1B4_SEL_SHIFT |
+			     GPIO1B5_GMAC_RXCLKM1 << GPIO1B5_SEL_SHIFT |
+			     GPIO1B6_GMAC_RXD3M1 << GPIO1B6_SEL_SHIFT |
+			     GPIO1B7_GMAC_RXD2M1 << GPIO1B7_SEL_SHIFT);
+
+		rk_clrsetreg(&grf->gpio1c_iomux,
+			     GPIO1C0_SEL_MASK |
+			     GPIO1C1_SEL_MASK |
+			     GPIO1C3_SEL_MASK |
+			     GPIO1C5_SEL_MASK |
+			     GPIO1C6_SEL_MASK |
+			     GPIO1C7_SEL_MASK,
+			     GPIO1C0_GMAC_TXD3M1 << GPIO1C0_SEL_SHIFT |
+			     GPIO1C1_GMAC_TXD2M1 << GPIO1C1_SEL_SHIFT |
+			     GPIO1C3_GMAC_MDIOM1 << GPIO1C3_SEL_SHIFT |
+			     GPIO1C5_GMAC_CLKM1 << GPIO1C5_SEL_SHIFT |
+			     GPIO1C6_GMAC_RXDVM1 << GPIO1C6_SEL_SHIFT |
+			     GPIO1C7_GMAC_MDCM1 << GPIO1C7_SEL_SHIFT);
+
+		rk_clrsetreg(&grf->gpio1d_iomux,
+			     GPIO1D1_SEL_MASK,
+			     GPIO1D1_GMAC_TXENM1 << GPIO1D1_SEL_SHIFT);
+
+		/* set rgmii m0 tx pins mux */
+		rk_clrsetreg(&grf->gpio0b_iomux,
+			     GPIO0B0_SEL_MASK |
+			     GPIO0B4_SEL_MASK,
+			     GPIO0B0_GAMC_CLKTXM0 << GPIO0B0_SEL_SHIFT |
+			     GPIO0B4_GAMC_TXENM0 << GPIO0B4_SEL_SHIFT);
+
+		rk_clrsetreg(&grf->gpio0c_iomux,
+			     GPIO0C0_SEL_MASK |
+			     GPIO0C1_SEL_MASK |
+			     GPIO0C6_SEL_MASK |
+			     GPIO0C7_SEL_MASK,
+			     GPIO0C0_GAMC_TXD1M0 << GPIO0C0_SEL_SHIFT |
+			     GPIO0C1_GAMC_TXD0M0 << GPIO0C1_SEL_SHIFT |
+			     GPIO0C6_GAMC_TXD2M0 << GPIO0C6_SEL_SHIFT |
+			     GPIO0C7_GAMC_TXD3M0 << GPIO0C7_SEL_SHIFT);
+
+		rk_clrsetreg(&grf->gpio0d_iomux,
+			     GPIO0D0_SEL_MASK,
+			     GPIO0D0_GMAC_CLKM0 << GPIO0D0_SEL_SHIFT);
+
+		/* set com mux */
+		rk_clrsetreg(&grf->com_iomux,
+			     IOMUX_SEL_GMAC_MASK |
+			     IOMUX_SEL_GMACM1_OPTIMIZATION_MASK,
+			     IOMUX_SEL_GMAC_M1 << IOMUX_SEL_GMAC_SHIFT |
+			     IOMUX_SEL_GMACM1_OPTIMIZATION_AFTER <<
+			     IOMUX_SEL_GMACM1_OPTIMIZATION_SHIFT);
+
+		/*
+		 * set rgmii m1 tx pins to 12ma drive-strength,
+		 * and clean others to 2ma.
+		 */
+		rk_clrsetreg(&grf->gpio1b_e,
+			     GRF_GPIO1B0_E_MASK |
+			     GRF_GPIO1B1_E_MASK |
+			     GRF_GPIO1B2_E_MASK |
+			     GRF_GPIO1B3_E_MASK |
+			     GRF_GPIO1B4_E_MASK |
+			     GRF_GPIO1B5_E_MASK |
+			     GRF_GPIO1B6_E_MASK |
+			     GRF_GPIO1B7_E_MASK,
+			     GPIO_BIAS_12MA << GRF_GPIO1B0_E_SHIFT |
+			     GPIO_BIAS_12MA << GRF_GPIO1B1_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1B2_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1B3_E_SHIFT |
+			     GPIO_BIAS_12MA << GRF_GPIO1B4_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1B5_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1B6_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1B7_E_SHIFT);
+
+		rk_clrsetreg(&grf->gpio1c_e,
+			     GRF_GPIO1C0_E_MASK |
+			     GRF_GPIO1C1_E_MASK |
+			     GRF_GPIO1C3_E_MASK |
+			     GRF_GPIO1C5_E_MASK |
+			     GRF_GPIO1C6_E_MASK |
+			     GRF_GPIO1C7_E_MASK,
+			     GPIO_BIAS_12MA << GRF_GPIO1C0_E_SHIFT |
+			     GPIO_BIAS_12MA << GRF_GPIO1C1_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1C3_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1C5_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1C6_E_SHIFT |
+			     GPIO_BIAS_2MA << GRF_GPIO1C7_E_SHIFT);
+
+		rk_clrsetreg(&grf->gpio1d_e,
+			     GRF_GPIO1D1_E_MASK,
+			     GPIO_BIAS_12MA << GRF_GPIO1D1_E_SHIFT);
+		break;
+	default:
+		debug("gmac id = %d iomux error!\n", gmac_id);
+		break;
+	}
+}
+#endif
+
 static int rk3328_pinctrl_request(struct udevice *dev, int func, int flags)
 {
 	struct rk3328_pinctrl_priv *priv = dev_get_priv(dev);
@@ -349,6 +615,11 @@ static int rk3328_pinctrl_request(struct udevice *dev, int func, int flags)
 	case PERIPH_ID_SDMMC1:
 		pinctrl_rk3328_sdmmc_config(priv->grf, func);
 		break;
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+	case PERIPH_ID_GMAC:
+		pinctrl_rk3328_gmac_config(priv->grf, func);
+		break;
+#endif
 	default:
 		return -EINVAL;
 	}
@@ -383,6 +654,10 @@ static int rk3328_pinctrl_get_periph_id(struct udevice *dev,
 		return PERIPH_ID_SDCARD;
 	case 14:
 		return PERIPH_ID_EMMC;
+#if CONFIG_IS_ENABLED(GMAC_ROCKCHIP)
+	case 24:
+		return PERIPH_ID_GMAC;
+#endif
 	}
 
 	return -ENOENT;