diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.13/193-stmmac-platform-ext-for-a20.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.13/193-stmmac-platform-ext-for-a20.patch | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-3.13/193-stmmac-platform-ext-for-a20.patch b/target/linux/sunxi/patches-3.13/193-stmmac-platform-ext-for-a20.patch new file mode 100644 index 0000000..9bc1bcb --- /dev/null +++ b/target/linux/sunxi/patches-3.13/193-stmmac-platform-ext-for-a20.patch @@ -0,0 +1,204 @@ +From 3c6560eccfeee3a93d57c3b2206abfbe06459015 Mon Sep 17 00:00:00 2001 +From: Chen-Yu Tsai <wens@csie.org> +Date: Sat, 7 Dec 2013 01:29:37 +0800 +Subject: [PATCH] net: stmmac: sunxi platfrom extensions for GMAC in Allwinner + A20 SoC's + +The Allwinner A20 has an ethernet controller that seems to be +an early version of Synopsys DesignWare MAC 10/100/1000 Universal, +which is supported by the stmmac driver. + +Allwinner's GMAC requires setting additional registers in the SoC's +clock control unit. + +The exact version of the DWMAC IP that Allwinner uses is unknown, +thus the exact feature set is unknown. + +Signed-off-by: Chen-Yu Tsai <wens@csie.org> +--- + .../bindings/net/allwinner,sun7i-gmac.txt | 22 +++++++ + drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++++ + drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + + drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 76 ++++++++++++++++++++++ + drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 + + .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 + + 6 files changed, 117 insertions(+) + create mode 100644 Documentation/devicetree/bindings/net/allwinner,sun7i-gmac.txt + create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c + +diff --git a/Documentation/devicetree/bindings/net/allwinner,sun7i-gmac.txt b/Documentation/devicetree/bindings/net/allwinner,sun7i-gmac.txt +new file mode 100644 +index 0000000..271554a +--- /dev/null ++++ b/Documentation/devicetree/bindings/net/allwinner,sun7i-gmac.txt +@@ -0,0 +1,22 @@ ++* Allwinner GMAC ethernet controller ++ ++This device is a platform glue layer for stmmac. ++Please see stmmac.txt for the other unchanged properties. ++ ++Required properties: ++ - compatible: Should be "allwinner,sun7i-gmac" ++ - reg: Address and length of register set for the device and corresponding ++ clock control ++ ++Examples: ++ ++ gmac: ethernet@01c50000 { ++ compatible = "allwinner,sun7i-gmac"; ++ reg = <0x01c50000 0x10000>, ++ <0x01c20164 0x4>; ++ interrupts = <0 85 1>; ++ interrupt-names = "macirq"; ++ clocks = <&ahb_gates 49>; ++ clock-names = "stmmaceth"; ++ phy-mode = "mii"; ++ }; +diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig +index 6e52c0f..6d71210 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig ++++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig +@@ -25,6 +25,18 @@ config STMMAC_PLATFORM + + If unsure, say N. + ++config DWMAC_SUNXI ++ bool "Allwinner GMAC support" ++ depends on STMMAC_PLATFORM ++ depends on ARCH_SUNXI ++ default y ++ ---help--- ++ Support for Allwinner A20 GMAC ethernet driver. ++ ++ This selects Allwinner SoC glue layer support for the ++ stmmac device driver. This driver is used for A20 GMAC ++ ethernet controller. ++ + config STMMAC_PCI + bool "STMMAC PCI bus support" + depends on STMMAC_ETH && PCI +diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile +index 356a9dd..ecadece 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/Makefile ++++ b/drivers/net/ethernet/stmicro/stmmac/Makefile +@@ -1,6 +1,7 @@ + obj-$(CONFIG_STMMAC_ETH) += stmmac.o + stmmac-$(CONFIG_STMMAC_PLATFORM) += stmmac_platform.o + stmmac-$(CONFIG_STMMAC_PCI) += stmmac_pci.o ++stmmac-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o + stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o \ + chain_mode.o dwmac_lib.o dwmac1000_core.o dwmac1000_dma.o \ + dwmac100_core.o dwmac100_dma.o enh_desc.o norm_desc.o \ +diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c +new file mode 100644 +index 0000000..6c9fdb0 +--- /dev/null ++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c +@@ -0,0 +1,76 @@ ++/** ++ * dwmac-sunxi.c - Allwinner sunxi DWMAC specific glue layer ++ * ++ * Copyright (C) 2013 Chen-Yu Tsai ++ * ++ * Chen-Yu Tsai <wens@csie.org> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/clk.h> ++#include <linux/phy.h> ++#include <linux/stmmac.h> ++ ++#define GMAC_IF_TYPE_RGMII 0x4 ++ ++#define GMAC_TX_CLK_MASK 0x3 ++#define GMAC_TX_CLK_MII 0x0 ++#define GMAC_TX_CLK_RGMII_INT 0x2 ++ ++static int sun7i_gmac_init(struct platform_device *pdev) ++{ ++ struct resource *res; ++ struct device *dev = &pdev->dev; ++ void __iomem *addr = NULL; ++ struct plat_stmmacenet_data *plat_dat = NULL; ++ u32 priv_clk_reg; ++ ++ plat_dat = dev_get_platdata(&pdev->dev); ++ if (!plat_dat) ++ return -EINVAL; ++ ++ /* Get GMAC clock register in CCU */ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 1); ++ addr = devm_ioremap_resource(dev, res); ++ if (IS_ERR(addr)) ++ return PTR_ERR(addr); ++ ++ priv_clk_reg = readl(addr); ++ ++ /* Set GMAC interface port mode */ ++ if (plat_dat->interface == PHY_INTERFACE_MODE_RGMII) ++ priv_clk_reg |= GMAC_IF_TYPE_RGMII; ++ else ++ priv_clk_reg &= ~GMAC_IF_TYPE_RGMII; ++ ++ /* Set GMAC transmit clock source. */ ++ priv_clk_reg &= ~GMAC_TX_CLK_MASK; ++ if (plat_dat->interface == PHY_INTERFACE_MODE_RGMII ++ || plat_dat->interface == PHY_INTERFACE_MODE_GMII) ++ priv_clk_reg |= GMAC_TX_CLK_RGMII_INT; ++ else ++ priv_clk_reg |= GMAC_TX_CLK_MII; ++ ++ writel(priv_clk_reg, addr); ++ ++ /* mask out phy addr 0x0 */ ++ plat_dat->mdio_bus_data->phy_mask = 0x1; ++ ++ return 0; ++} ++ ++const struct plat_stmmacenet_data sun7i_gmac_data = { ++ .has_gmac = 1, ++ .tx_coe = 1, ++ .init = sun7i_gmac_init, ++}; ++ +diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h +index 22f89ff..c8f659a 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h ++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h +@@ -130,6 +130,9 @@ struct stmmac_priv *stmmac_dvr_probe(struct device *device, + bool stmmac_eee_init(struct stmmac_priv *priv); + + #ifdef CONFIG_STMMAC_PLATFORM ++#ifdef CONFIG_DWMAC_SUNXI ++extern const struct plat_stmmacenet_data sun7i_gmac_data; ++#endif + extern struct platform_driver stmmac_pltfr_driver; + static inline int stmmac_register_platform(void) + { +diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +index df3fd1c..6cf8292 100644 +--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c ++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +@@ -35,6 +35,9 @@ + { .compatible = "snps,dwmac-3.70a"}, + { .compatible = "snps,dwmac-3.710"}, + { .compatible = "snps,dwmac"}, ++#ifdef CONFIG_DWMAC_SUNXI ++ { .compatible = "allwinner,sun7i-gmac", .data = &sun7i_gmac_data}, ++#endif + { /* sentinel */ } + }; + MODULE_DEVICE_TABLE(of, stmmac_dt_ids); +-- +1.8.5.1 + |