diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.13/153-7-stmmac-sunxi-extensions-for-a20.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.13/153-7-stmmac-sunxi-extensions-for-a20.patch | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/target/linux/sunxi/patches-3.13/153-7-stmmac-sunxi-extensions-for-a20.patch b/target/linux/sunxi/patches-3.13/153-7-stmmac-sunxi-extensions-for-a20.patch deleted file mode 100644 index d0d9f13646..0000000000 --- a/target/linux/sunxi/patches-3.13/153-7-stmmac-sunxi-extensions-for-a20.patch +++ /dev/null @@ -1,273 +0,0 @@ -From af0bd4e9ba809391f275d0c094ac0bfbfbb3f430 Mon Sep 17 00:00:00 2001 -From: Chen-Yu Tsai <wens@csie.org> -Date: Fri, 17 Jan 2014 21:24:47 +0800 -Subject: [PATCH] net: stmmac: sunxi platform 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> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - .../bindings/net/allwinner,sun7i-a20-gmac.txt | 27 ++++ - drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 ++ - drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + - drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 140 +++++++++++++++++++++ - drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 + - .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 + - 6 files changed, 185 insertions(+) - create mode 100644 Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.txt - create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c - -diff --git a/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.txt b/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.txt -new file mode 100644 -index 0000000..ea4d752 ---- /dev/null -+++ b/Documentation/devicetree/bindings/net/allwinner,sun7i-a20-gmac.txt -@@ -0,0 +1,27 @@ -+* 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-a20-gmac" -+ - clocks: Should contain the GMAC main clock, and tx clock -+ The tx clock type should be "allwinner,sun7i-a20-gmac-clk" -+ - clock-names: Should contain the clock names "stmmaceth", -+ and "allwinner_gmac_tx" -+ -+Optional properties: -+- phy-supply: phandle to a regulator if the PHY needs one -+ -+Examples: -+ -+ gmac: ethernet@01c50000 { -+ compatible = "allwinner,sun7i-a20-gmac"; -+ reg = <0x01c50000 0x10000>, -+ <0x01c20164 0x4>; -+ interrupts = <0 85 1>; -+ interrupt-names = "macirq"; -+ clocks = <&ahb_gates 49>, <&gmac_tx>; -+ clock-names = "stmmaceth", "allwinner_gmac_tx"; -+ phy-mode = "mii"; -+ }; -diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig -index b59d1ef..e2f202e 100644 ---- a/drivers/net/ethernet/stmicro/stmmac/Kconfig -+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig -@@ -26,6 +26,17 @@ config STMMAC_PLATFORM - - If unsure, say N. - -+config DWMAC_SUNXI -+ bool "Allwinner GMAC support" -+ depends on STMMAC_PLATFORM && ARCH_SUNXI -+ default y -+ ---help--- -+ Support for Allwinner A20/A31 GMAC ethernet controllers. -+ -+ This selects Allwinner SoC glue layer support for the -+ stmmac device driver. This driver is used for A20/A31 -+ 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..771cd15f ---- /dev/null -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c -@@ -0,0 +1,140 @@ -+/** -+ * 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/stmmac.h> -+#include <linux/clk.h> -+#include <linux/phy.h> -+#include <linux/of_net.h> -+#include <linux/regulator/consumer.h> -+ -+struct sunxi_priv_data { -+ int interface; -+ int clk_enabled; -+ struct clk *tx_clk; -+ struct regulator *regulator; -+}; -+ -+static void *sun7i_gmac_setup(struct platform_device *pdev) -+{ -+ struct sunxi_priv_data *gmac; -+ struct device *dev = &pdev->dev; -+ -+ gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL); -+ if (!gmac) -+ return ERR_PTR(-ENOMEM); -+ -+ gmac->interface = of_get_phy_mode(dev->of_node); -+ -+ gmac->tx_clk = devm_clk_get(dev, "allwinner_gmac_tx"); -+ if (IS_ERR(gmac->tx_clk)) { -+ dev_err(dev, "could not get tx clock\n"); -+ return gmac->tx_clk; -+ } -+ -+ /* Optional regulator for PHY */ -+ gmac->regulator = devm_regulator_get_optional(dev, "phy"); -+ if (IS_ERR(gmac->regulator)) { -+ if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER) -+ return ERR_PTR(-EPROBE_DEFER); -+ dev_info(dev, "no regulator found\n"); -+ gmac->regulator = NULL; -+ } -+ -+ return gmac; -+} -+ -+#define SUN7I_GMAC_GMII_RGMII_RATE 125000000 -+#define SUN7I_GMAC_MII_RATE 25000000 -+ -+static int sun7i_gmac_init(struct platform_device *pdev, void *priv) -+{ -+ struct sunxi_priv_data *gmac = priv; -+ int ret; -+ -+ if (gmac->regulator) { -+ ret = regulator_enable(gmac->regulator); -+ if (ret) -+ return ret; -+ } -+ -+ /* Set GMAC interface port mode -+ * -+ * The GMAC TX clock lines are configured by setting the clock -+ * rate, which then uses the auto-reparenting feature of the -+ * clock driver, and enabling/disabling the clock. -+ */ -+ if (gmac->interface == PHY_INTERFACE_MODE_RGMII) { -+ clk_set_rate(gmac->tx_clk, SUN7I_GMAC_GMII_RGMII_RATE); -+ clk_prepare_enable(gmac->tx_clk); -+ gmac->clk_enabled = 1; -+ } else { -+ clk_set_rate(gmac->tx_clk, SUN7I_GMAC_MII_RATE); -+ clk_prepare(gmac->tx_clk); -+ } -+ -+ return 0; -+} -+ -+static void sun7i_gmac_exit(struct platform_device *pdev, void *priv) -+{ -+ struct sunxi_priv_data *gmac = priv; -+ -+ if (gmac->clk_enabled) { -+ clk_disable(gmac->tx_clk); -+ gmac->clk_enabled = 0; -+ } -+ clk_unprepare(gmac->tx_clk); -+ -+ if (gmac->regulator) -+ regulator_disable(gmac->regulator); -+} -+ -+static void sun7i_fix_speed(void *priv, unsigned int speed) -+{ -+ struct sunxi_priv_data *gmac = priv; -+ -+ /* only GMII mode requires us to reconfigure the clock lines */ -+ if (gmac->interface != PHY_INTERFACE_MODE_GMII) -+ return; -+ -+ if (gmac->clk_enabled) { -+ clk_disable(gmac->tx_clk); -+ gmac->clk_enabled = 0; -+ } -+ clk_unprepare(gmac->tx_clk); -+ -+ if (speed == 1000) { -+ clk_set_rate(gmac->tx_clk, SUN7I_GMAC_GMII_RGMII_RATE); -+ clk_prepare_enable(gmac->tx_clk); -+ gmac->clk_enabled = 1; -+ } else { -+ clk_set_rate(gmac->tx_clk, SUN7I_GMAC_MII_RATE); -+ clk_prepare(gmac->tx_clk); -+ } -+} -+ -+/* of_data specifying hardware features and callbacks. -+ * hardware features were copied from Allwinner drivers. */ -+const struct stmmac_of_data sun7i_gmac_data = { -+ .has_gmac = 1, -+ .tx_coe = 1, -+ .fix_mac_speed = sun7i_fix_speed, -+ .setup = sun7i_gmac_setup, -+ .init = sun7i_gmac_init, -+ .exit = sun7i_gmac_exit, -+}; -diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h -index c1c141f..d9af26e 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 stmmac_of_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 bf119db..9d4baa8 100644 ---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c -+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c -@@ -30,6 +30,9 @@ - #include "stmmac.h" - - static const struct of_device_id stmmac_dt_ids[] = { -+#ifdef CONFIG_DWMAC_SUNXI -+ { .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data}, -+#endif - /* SoC specific glue layers should come before generic bindings */ - { .compatible = "st,spear600-gmac"}, - { .compatible = "snps,dwmac-3.610"}, --- -1.8.5.5 - |