STM32F429 Chip embeds a Synopsys 3.50a MAC IP.
This series:
-enhance current stmmac driver to control it (code already
available) and adds basic glue for STM32F429 chip.
-Enable basic Net config in kernel.
Changes since v5:
-Fix typo in bindings documentation patch.
-Change clocks names in stm32-dwmac glue driver / Documentation.
-After rebase, stm32 ethernet node is now available. It has to be updated
according to new clocks names.
Changes since v4:
-Fix dirty copy/past in bindings documentation patch.
Changes since v3:
-Fix "tx-clk" and "rx-clk" as required clocks. Driver and bindings are
modified.
Changes since v2:
-Fix alphabetic order in Kconfig and Makefile.
-Improve code according to Joachim review.
-Binding: remove useless entry.
Changes since v1:
-Fix Kbuild issue in Kconfig.
-Remove init/exit callbacks. Suspend/Resume and remove driver is no more
driven in stmmac_pltfr but directly in dwmac-stm32 glue driver.
-Take into account Joachim review.
Regards.
Alexandre.
Alexandre TORGUE (6):
net: ethernet: dwmac: add Ethernet glue logic for stm32 chip
Documentation: Bindings: Add STM32 DWMAC glue
net: ethernet: stmmac: add support of Synopsys 3.50a MAC IP
ARM: STM32: Enable Ethernet in stm32_defconfig
ARM: dts: stm32f429: Align Ethernet node with new bindings properties
ARM: dts: stm32f429: Update Ethernet node on Eval board
.../devicetree/bindings/net/stm32-dwmac.txt | 32 ++++
arch/arm/boot/dts/stm32429i-eval.dts | 4 +-
arch/arm/boot/dts/stm32f429.dtsi | 6 +-
arch/arm/configs/stm32_defconfig | 9 +
drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++
drivers/net/ethernet/stmicro/stmmac/Makefile | 1 +
drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 193 +++++++++++++++++++++
.../net/ethernet/stmicro/stmmac/stmmac_platform.c | 1 +
8 files changed, 253 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/stm32-dwmac.txt
create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
--
1.9.1
stm324xx family chips support Synopsys MAC 3.510 IP.
This patch adds settings for logical glue logic:
-clocks
-mode selection MII or RMII.
Reviewed-by: Joachim Eastwood <[email protected]>
Acked-by: Giuseppe Cavallaro <[email protected]>
Tested-by: Maxime Coquelin <[email protected]>
Signed-off-by: Alexandre TORGUE <[email protected]>
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index cec147d..235d679 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -104,6 +104,18 @@ config DWMAC_STI
device driver. This driver is used on for the STi series
SOCs GMAC ethernet controller.
+config DWMAC_STM32
+ tristate "STM32 DWMAC support"
+ default ARCH_STM32
+ depends on OF && HAS_IOMEM
+ select MFD_SYSCON
+ ---help---
+ Support for ethernet controller on STM32 SOCs.
+
+ This selects STM32 SoC glue layer support for the stmmac
+ device driver. This driver is used on for the STM32 series
+ SOCs GMAC ethernet controller.
+
config DWMAC_SUNXI
tristate "Allwinner GMAC support"
default ARCH_SUNXI
diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile
index 0fb362d..8828ada 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Makefile
+++ b/drivers/net/ethernet/stmicro/stmmac/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o
obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o
obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-socfpga.o
obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o
+obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o
obj-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o
obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o
stmmac-platform-objs:= stmmac_platform.o
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
new file mode 100644
index 0000000..5c2afe5
--- /dev/null
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
@@ -0,0 +1,193 @@
+/*
+ * dwmac-stm32.c - DWMAC Specific Glue layer for STM32 MCU
+ *
+ * Copyright (C) Alexandre Torgue 2015
+ * Author: Alexandre Torgue <[email protected]>
+ * License terms: GNU General Public License (GPL), version 2
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_net.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/stmmac.h>
+
+#include "stmmac_platform.h"
+
+#define MII_PHY_SEL_MASK BIT(23)
+
+struct stm32_dwmac {
+ struct clk *clk_tx;
+ struct clk *clk_rx;
+ u32 mode_reg; /* MAC glue-logic mode register */
+ struct regmap *regmap;
+ u32 speed;
+};
+
+static int stm32_dwmac_init(struct plat_stmmacenet_data *plat_dat)
+{
+ struct stm32_dwmac *dwmac = plat_dat->bsp_priv;
+ u32 reg = dwmac->mode_reg;
+ u32 val;
+ int ret;
+
+ val = (plat_dat->interface == PHY_INTERFACE_MODE_MII) ? 0 : 1;
+ ret = regmap_update_bits(dwmac->regmap, reg, MII_PHY_SEL_MASK, val);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(dwmac->clk_tx);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(dwmac->clk_rx);
+ if (ret)
+ clk_disable_unprepare(dwmac->clk_tx);
+
+ return ret;
+}
+
+static void stm32_dwmac_clk_disable(struct stm32_dwmac *dwmac)
+{
+ clk_disable_unprepare(dwmac->clk_tx);
+ clk_disable_unprepare(dwmac->clk_rx);
+}
+
+static int stm32_dwmac_parse_data(struct stm32_dwmac *dwmac,
+ struct device *dev)
+{
+ struct device_node *np = dev->of_node;
+ int err;
+
+ /* Get TX/RX clocks */
+ dwmac->clk_tx = devm_clk_get(dev, "mac-clk-tx");
+ if (IS_ERR(dwmac->clk_tx)) {
+ dev_err(dev, "No tx clock provided...\n");
+ return PTR_ERR(dwmac->clk_tx);
+ }
+ dwmac->clk_rx = devm_clk_get(dev, "mac-clk-rx");
+ if (IS_ERR(dwmac->clk_rx)) {
+ dev_err(dev, "No rx clock provided...\n");
+ return PTR_ERR(dwmac->clk_rx);
+ }
+
+ /* Get mode register */
+ dwmac->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscon");
+ if (IS_ERR(dwmac->regmap))
+ return PTR_ERR(dwmac->regmap);
+
+ err = of_property_read_u32_index(np, "st,syscon", 1, &dwmac->mode_reg);
+ if (err)
+ dev_err(dev, "Can't get sysconfig mode offset (%d)\n", err);
+
+ return err;
+}
+
+static int stm32_dwmac_probe(struct platform_device *pdev)
+{
+ struct plat_stmmacenet_data *plat_dat;
+ struct stmmac_resources stmmac_res;
+ struct stm32_dwmac *dwmac;
+ int ret;
+
+ ret = stmmac_get_platform_resources(pdev, &stmmac_res);
+ if (ret)
+ return ret;
+
+ plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
+ if (IS_ERR(plat_dat))
+ return PTR_ERR(plat_dat);
+
+ dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
+ if (!dwmac)
+ return -ENOMEM;
+
+ ret = stm32_dwmac_parse_data(dwmac, &pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Unable to parse OF data\n");
+ return ret;
+ }
+
+ plat_dat->bsp_priv = dwmac;
+
+ ret = stm32_dwmac_init(plat_dat);
+ if (ret)
+ return ret;
+
+ ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
+ if (ret)
+ stm32_dwmac_clk_disable(dwmac);
+
+ return ret;
+}
+
+static int stm32_dwmac_remove(struct platform_device *pdev)
+{
+ struct net_device *ndev = platform_get_drvdata(pdev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+ int ret = stmmac_dvr_remove(ndev);
+
+ stm32_dwmac_clk_disable(priv->plat->bsp_priv);
+
+ return ret;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int stm32_dwmac_suspend(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+ int ret;
+
+ ret = stmmac_suspend(ndev);
+ stm32_dwmac_clk_disable(priv->plat->bsp_priv);
+
+ return ret;
+}
+
+static int stm32_dwmac_resume(struct device *dev)
+{
+ struct net_device *ndev = dev_get_drvdata(dev);
+ struct stmmac_priv *priv = netdev_priv(ndev);
+ int ret;
+
+ ret = stm32_dwmac_init(priv->plat);
+ if (ret)
+ return ret;
+
+ ret = stmmac_resume(ndev);
+
+ return ret;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+SIMPLE_DEV_PM_OPS(stm32_dwmac_pm_ops, stm32_dwmac_suspend, stm32_dwmac_resume);
+
+static const struct of_device_id stm32_dwmac_match[] = {
+ { .compatible = "st,stm32-dwmac"},
+ { }
+};
+MODULE_DEVICE_TABLE(of, stm32_dwmac_match);
+
+static struct platform_driver stm32_dwmac_driver = {
+ .probe = stm32_dwmac_probe,
+ .remove = stm32_dwmac_remove,
+ .driver = {
+ .name = "stm32-dwmac",
+ .pm = &stm32_dwmac_pm_ops,
+ .of_match_table = stm32_dwmac_match,
+ },
+};
+module_platform_driver(stm32_dwmac_driver);
+
+MODULE_AUTHOR("Alexandre Torgue <[email protected]>");
+MODULE_DESCRIPTION("STMicroelectronics MCU DWMAC Specific Glue layer");
+MODULE_LICENSE("GPL v2");
--
1.9.1
Update new pinctrl phandle name and use new node name.
Signed-off-by: Alexandre TORGUE <[email protected]>
diff --git a/arch/arm/boot/dts/stm32429i-eval.dts b/arch/arm/boot/dts/stm32429i-eval.dts
index 6bfc595..9a72445 100644
--- a/arch/arm/boot/dts/stm32429i-eval.dts
+++ b/arch/arm/boot/dts/stm32429i-eval.dts
@@ -94,9 +94,9 @@
clock-frequency = <25000000>;
};
-ðernet0 {
+&mac {
status = "okay";
- pinctrl-0 = <ðernet0_mii>;
+ pinctrl-0 = <ðernet_mii>;
pinctrl-names = "default";
phy-mode = "mii-id";
mdio0 {
--
1.9.1
Adds support of Synopsys 3.50a MAC IP in stmmac driver.
Acked-by: Giuseppe Cavallaro <[email protected]>
Tested-by: Maxime Coquelin <[email protected]>
Signed-off-by: Alexandre TORGUE <[email protected]>
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index effaa4f..7ef8b98 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -262,6 +262,7 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
* once needed on other platforms.
*/
if (of_device_is_compatible(np, "st,spear600-gmac") ||
+ of_device_is_compatible(np, "snps,dwmac-3.50a") ||
of_device_is_compatible(np, "snps,dwmac-3.70a") ||
of_device_is_compatible(np, "snps,dwmac")) {
/* Note that the max-frame-size parameter as defined in the
--
1.9.1
This patch aligns clocks names and node reference according to new
stm32-dwmac glue binding. It also renames Ethernet pinctrl phandle
(indeed there is no need to add 0 as Ethernet instance as there is only
one IP in SOC).
Signed-off-by: Alexandre TORGUE <[email protected]>
diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
index 35df462..5995998 100644
--- a/arch/arm/boot/dts/stm32f429.dtsi
+++ b/arch/arm/boot/dts/stm32f429.dtsi
@@ -304,7 +304,7 @@
};
};
- ethernet0_mii: mii@0 {
+ ethernet_mii: mii@0 {
pins {
pinmux = <STM32F429_PG13_FUNC_ETH_MII_TXD0_ETH_RMII_TXD0>,
<STM32F429_PG14_FUNC_ETH_MII_TXD1_ETH_RMII_TXD1>,
@@ -363,13 +363,13 @@
st,mem2mem;
};
- ethernet0: dwmac@40028000 {
+ mac: ethernet@40028000 {
compatible = "st,stm32-dwmac", "snps,dwmac-3.50a";
reg = <0x40028000 0x8000>;
reg-names = "stmmaceth";
interrupts = <61>, <62>;
interrupt-names = "macirq", "eth_wake_irq";
- clock-names = "stmmaceth", "tx-clk", "rx-clk";
+ clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
clocks = <&rcc 0 25>, <&rcc 0 26>, <&rcc 0 27>;
st,syscon = <&syscfg 0x4>;
snps,pbl = <8>;
--
1.9.1
Enable basic Ethernet support (IPV4) for stm32 defconfig.
Signed-off-by: Alexandre TORGUE <[email protected]>
diff --git a/arch/arm/configs/stm32_defconfig b/arch/arm/configs/stm32_defconfig
index 1e5ec2a..719218b 100644
--- a/arch/arm/configs/stm32_defconfig
+++ b/arch/arm/configs/stm32_defconfig
@@ -33,11 +33,20 @@ CONFIG_XIP_PHYS_ADDR=0x08008000
CONFIG_BINFMT_FLAT=y
CONFIG_BINFMT_SHARED_FLAT=y
# CONFIG_COREDUMP is not set
+CONFIG_NET=y
+CONFIG_INET=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_IPV6 is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_FW_LOADER is not set
# CONFIG_BLK_DEV is not set
CONFIG_EEPROM_93CX6=y
+CONFIG_NETDEVICES=y
+CONFIG_STMMAC_ETH=y
+# CONFIG_WLAN is not set
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
--
1.9.1
Signed-off-by: Alexandre TORGUE <[email protected]>
diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.txt b/Documentation/devicetree/bindings/net/stm32-dwmac.txt
new file mode 100644
index 0000000..c35afb7
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/stm32-dwmac.txt
@@ -0,0 +1,32 @@
+STMicroelectronics STM32 / MCU DWMAC glue layer controller
+
+This file documents platform glue layer for stmmac.
+Please see stmmac.txt for the other unchanged properties.
+
+The device node has following properties.
+
+Required properties:
+- compatible: Should be "st,stm32-dwmac" to select glue, and
+ "snps,dwmac-3.50a" to select IP version.
+- clocks: Must contain a phandle for each entry in clock-names.
+- clock-names: Should be "stmmaceth" for the host clock.
+ Should be "mac-clk-tx" for the MAC TX clock.
+ Should be "mac-clk-rx" for the MAC RX clock.
+- st,syscon : Should be phandle/offset pair. The phandle to the syscon node which
+ encompases the glue register, and the offset of the control register.
+Example:
+
+ ethernet@40028000 {
+ compatible = "st,stm32-dwmac", "snps,dwmac-3.50a";
+ status = "disabled";
+ reg = <0x40028000 0x8000>;
+ reg-names = "stmmaceth";
+ interrupts = <0 61 0>, <0 62 0>;
+ interrupt-names = "macirq", "eth_wake_irq";
+ clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
+ clocks = <&rcc 0 25>, <&rcc 0 26>, <&rcc 0 27>;
+ st,syscon = <&syscfg 0x4>;
+ snps,pbl = <8>;
+ snps,mixed-burst;
+ dma-ranges;
+ };
--
1.9.1
Hi Alex,
2016-04-25 13:54 GMT+02:00 Alexandre TORGUE <[email protected]>:
> Enable basic Ethernet support (IPV4) for stm32 defconfig.
>
> Signed-off-by: Alexandre TORGUE <[email protected]>
Acked-by: Maxime Coquelin <[email protected]>
Thanks!
Maxime
Hi Alex,
2016-04-25 13:54 GMT+02:00 Alexandre TORGUE <[email protected]>:
> This patch aligns clocks names and node reference according to new
> stm32-dwmac glue binding. It also renames Ethernet pinctrl phandle
> (indeed there is no need to add 0 as Ethernet instance as there is only
> one IP in SOC).
>
> Signed-off-by: Alexandre TORGUE <[email protected]>
>
> diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
> index 35df462..5995998 100644
> --- a/arch/arm/boot/dts/stm32f429.dtsi
> +++ b/arch/arm/boot/dts/stm32f429.dtsi
> @@ -304,7 +304,7 @@
> };
> };
>
> - ethernet0_mii: mii@0 {
> + ethernet_mii: mii@0 {
> pins {
> pinmux = <STM32F429_PG13_FUNC_ETH_MII_TXD0_ETH_RMII_TXD0>,
> <STM32F429_PG14_FUNC_ETH_MII_TXD1_ETH_RMII_TXD1>,
> @@ -363,13 +363,13 @@
> st,mem2mem;
> };
>
> - ethernet0: dwmac@40028000 {
> + mac: ethernet@40028000 {
> compatible = "st,stm32-dwmac", "snps,dwmac-3.50a";
> reg = <0x40028000 0x8000>;
> reg-names = "stmmaceth";
> interrupts = <61>, <62>;
> interrupt-names = "macirq", "eth_wake_irq";
> - clock-names = "stmmaceth", "tx-clk", "rx-clk";
> + clock-names = "stmmaceth", "mac-clk-tx", "mac-clk-rx";
It looks good to me, but I will wait for Rob's ack on the bindings
documentation patch before applying it.
Regards,
Maxime
2016-04-25 13:54 GMT+02:00 Alexandre TORGUE <[email protected]>:
> Update new pinctrl phandle name and use new node name.
>
> Signed-off-by: Alexandre TORGUE <[email protected]>
>
> diff --git a/arch/arm/boot/dts/stm32429i-eval.dts b/arch/arm/boot/dts/stm32429i-eval.dts
Acked-by: Maxime Coquelin <[email protected]>
Thanks!
Maxime
On Mon, Apr 25, 2016 at 01:53:58PM +0200, Alexandre TORGUE wrote:
> Signed-off-by: Alexandre TORGUE <[email protected]>
Acked-by: Rob Herring <[email protected]>
2016-04-28 22:59 GMT+02:00 Rob Herring <[email protected]>:
> On Mon, Apr 25, 2016 at 01:53:58PM +0200, Alexandre TORGUE wrote:
>> Signed-off-by: Alexandre TORGUE <[email protected]>
>
> Acked-by: Rob Herring <[email protected]>
Thanks Rob!
Arnd, I only have patches 4, 5 and 6 of this series for stm32 (2 DT,
one defconfig) for v4.7.
Should I send a pull request, or I can send the patches directly to
[email protected] so that
you apply them directly?
Thanks in advance,
Maxime