[PATCH net-next v9 0/6] MediaTek Ethernet Patches on MT8195

[PATCH net-next v9 0/6] MediaTek Ethernet Patches on MT8195

[Biao Huang]

Changes in v9:
1. remove oneOf for 1 entry as Rob's comments.
2. add new clocks to the end of existing clocks to simplify
   the binding as Rob's comments.

Changes in v8:
1. add acked-by in "stmmac: dwmac-mediatek: add platform level clocks
   management" patch

Changes in v7:
1. fix uninitialized warning as Jakub's comments.

Changes in v6:
1. update commit message as Jakub's comments.
2. split mt8195 eth dts patch("arm64: dts: mt8195: add ethernet device
   node") from this series, since mt8195 dtsi/dts basic patches is still
   under reviewing.
   https://patchwork.kernel.org/project/linux-mediatek/list/?series=579071
   we'll resend mt8195 eth dts patch once all the dependent patches are
   accepted.

Changes in v5:
1. remove useless inclusion in dwmac-mediatek.c as Angelo's comments.
2. add acked-by in "net-next: stmmac: dwmac-mediatek: add support for
   mt8195" patch

Changes in v4:
1. add changes in commit message in "net-next: dt-bindings: dwmac:
   Convert mediatek-dwmac to DT schema" patch.
2. remove ethernet-controller.yaml since snps,dwmac.yaml already include it.

Changes in v3:
1. Add prefix "net-next" to support new IC as Denis's suggestion.
2. Split dt-bindings to two patches, one for conversion, and the other for
   new IC.
3. add a new patch to update device node in mt2712-evb.dts to accommodate to
   changes in driver.
4. remove unnecessary wrapper as Angelo's suggestion.
5. Add acked-by in "net-next: stmmac: dwmac-mediatek: Reuse more common
   features" patch.

Changes in v2:
1. fix errors/warnings in mediatek-dwmac.yaml with upgraded dtschema tools

This series include 5 patches:
1. add platform level clocks management for dwmac-mediatek
2. resue more common features defined in stmmac_platform.c
3. add ethernet entry for mt8195
4. convert mediatek-dwmac.txt to mediatek-dwmac.yaml

Biao Huang (6):
  stmmac: dwmac-mediatek: add platform level clocks management
  stmmac: dwmac-mediatek: Reuse more common features
  arm64: dts: mt2712: update ethernet device node
  net: dt-bindings: dwmac: Convert mediatek-dwmac to DT schema
  stmmac: dwmac-mediatek: add support for mt8195
  net: dt-bindings: dwmac: add support for mt8195

 .../bindings/net/mediatek-dwmac.txt           |  91 ------
 .../bindings/net/mediatek-dwmac.yaml          | 177 ++++++++++
 arch/arm64/boot/dts/mediatek/mt2712-evb.dts   |   1 +
 arch/arm64/boot/dts/mediatek/mt2712e.dtsi     |  14 +-
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  | 306 ++++++++++++++++--
 5 files changed, 470 insertions(+), 119 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.txt
 create mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.yaml

--
2.18.0

[PATCH net-next v9 1/6] stmmac: dwmac-mediatek: add platform level clocks management

[Biao Huang]

This patch implements clks_config callback for dwmac-mediatek platform,
which could support platform level clocks management.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  | 25 +++++++++++++------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index 58c0feaa8131..0ff57c268dca 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
@@ -9,7 +9,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_net.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/stmmac.h>
 
@@ -359,9 +358,6 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv)
 		return ret;
 	}
 
-	pm_runtime_enable(&pdev->dev);
-	pm_runtime_get_sync(&pdev->dev);
-
 	return 0;
 }
 
@@ -370,11 +366,25 @@ static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv)
 	struct mediatek_dwmac_plat_data *plat = priv;
 
 	clk_bulk_disable_unprepare(plat->num_clks_to_config, plat->clks);
-
-	pm_runtime_put_sync(&pdev->dev);
-	pm_runtime_disable(&pdev->dev);
 }
 
+static int mediatek_dwmac_clks_config(void *priv, bool enabled)
+{
+	struct mediatek_dwmac_plat_data *plat = priv;
+	int ret = 0;
+
+	if (enabled) {
+		ret = clk_bulk_prepare_enable(plat->num_clks_to_config, plat->clks);
+		if (ret) {
+			dev_err(plat->dev, "failed to enable clks, err = %d\n", ret);
+			return ret;
+		}
+	} else {
+		clk_bulk_disable_unprepare(plat->num_clks_to_config, plat->clks);
+	}
+
+	return ret;
+}
 static int mediatek_dwmac_probe(struct platform_device *pdev)
 {
 	struct mediatek_dwmac_plat_data *priv_plat;
@@ -420,6 +430,7 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 	plat_dat->bsp_priv = priv_plat;
 	plat_dat->init = mediatek_dwmac_init;
 	plat_dat->exit = mediatek_dwmac_exit;
+	plat_dat->clks_config = mediatek_dwmac_clks_config;
 	mediatek_dwmac_init(pdev, priv_plat);
 
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
-- 
2.25.1

[PATCH net-next v9 2/6] stmmac: dwmac-mediatek: Reuse more common features

[Biao Huang]

This patch makes dwmac-mediatek reuse more features
supported by stmmac_platform.c.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  | 32 +++++++++----------
 1 file changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index 0ff57c268dca..8747aa4403e8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
@@ -334,22 +334,20 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv)
 	const struct mediatek_dwmac_variant *variant = plat->variant;
 	int ret;
 
-	ret = dma_set_mask_and_coherent(plat->dev, DMA_BIT_MASK(variant->dma_bit_mask));
-	if (ret) {
-		dev_err(plat->dev, "No suitable DMA available, err = %d\n", ret);
-		return ret;
-	}
-
-	ret = variant->dwmac_set_phy_interface(plat);
-	if (ret) {
-		dev_err(plat->dev, "failed to set phy interface, err = %d\n", ret);
-		return ret;
+	if (variant->dwmac_set_phy_interface) {
+		ret = variant->dwmac_set_phy_interface(plat);
+		if (ret) {
+			dev_err(plat->dev, "failed to set phy interface, err = %d\n", ret);
+			return ret;
+		}
 	}
 
-	ret = variant->dwmac_set_delay(plat);
-	if (ret) {
-		dev_err(plat->dev, "failed to set delay value, err = %d\n", ret);
-		return ret;
+	if (variant->dwmac_set_delay) {
+		ret = variant->dwmac_set_delay(plat);
+		if (ret) {
+			dev_err(plat->dev, "failed to set delay value, err = %d\n", ret);
+			return ret;
+		}
 	}
 
 	ret = clk_bulk_prepare_enable(plat->num_clks_to_config, plat->clks);
@@ -422,15 +420,15 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 		return PTR_ERR(plat_dat);
 
 	plat_dat->interface = priv_plat->phy_mode;
-	plat_dat->has_gmac4 = 1;
-	plat_dat->has_gmac = 0;
-	plat_dat->pmt = 0;
+	plat_dat->use_phy_wol = 1;
 	plat_dat->riwt_off = 1;
 	plat_dat->maxmtu = ETH_DATA_LEN;
+	plat_dat->addr64 = priv_plat->variant->dma_bit_mask;
 	plat_dat->bsp_priv = priv_plat;
 	plat_dat->init = mediatek_dwmac_init;
 	plat_dat->exit = mediatek_dwmac_exit;
 	plat_dat->clks_config = mediatek_dwmac_clks_config;
+
 	mediatek_dwmac_init(pdev, priv_plat);
 
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
-- 
2.25.1

[PATCH net-next v9 3/6] arm64: dts: mt2712: update ethernet device node

[Biao Huang]

Since there are some changes in ethernet driver,
update ethernet device node in dts to accommodate to it.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
 arch/arm64/boot/dts/mediatek/mt2712-evb.dts |  1 +
 arch/arm64/boot/dts/mediatek/mt2712e.dtsi   | 14 +++++++++-----
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt2712-evb.dts b/arch/arm64/boot/dts/mediatek/mt2712-evb.dts
index 7d369fdd3117..11aa135aa0f3 100644
--- a/arch/arm64/boot/dts/mediatek/mt2712-evb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt2712-evb.dts
@@ -110,6 +110,7 @@ &eth {
 	phy-handle = <&ethernet_phy0>;
 	mediatek,tx-delay-ps = <1530>;
 	snps,reset-gpio = <&pio 87 GPIO_ACTIVE_LOW>;
+	snps,reset-delays-us = <0 10000 10000>;
 	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&eth_default>;
 	pinctrl-1 = <&eth_sleep>;
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
index a9cca9c146fd..9e850e04fffb 100644
--- a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
@@ -726,7 +726,7 @@ queue2 {
 	};
 
 	eth: ethernet@1101c000 {
-		compatible = "mediatek,mt2712-gmac";
+		compatible = "mediatek,mt2712-gmac", "snps,dwmac-4.20a";
 		reg = <0 0x1101c000 0 0x1300>;
 		interrupts = <GIC_SPI 237 IRQ_TYPE_LEVEL_LOW>;
 		interrupt-names = "macirq";
@@ -734,15 +734,19 @@ eth: ethernet@1101c000 {
 		clock-names = "axi",
 			      "apb",
 			      "mac_main",
-			      "ptp_ref";
+			      "ptp_ref",
+			      "rmii_internal";
 		clocks = <&pericfg CLK_PERI_GMAC>,
 			 <&pericfg CLK_PERI_GMAC_PCLK>,
 			 <&topckgen CLK_TOP_ETHER_125M_SEL>,
-			 <&topckgen CLK_TOP_ETHER_50M_SEL>;
+			 <&topckgen CLK_TOP_ETHER_50M_SEL>,
+			 <&topckgen CLK_TOP_ETHER_50M_RMII_SEL>;
 		assigned-clocks = <&topckgen CLK_TOP_ETHER_125M_SEL>,
-				  <&topckgen CLK_TOP_ETHER_50M_SEL>;
+				  <&topckgen CLK_TOP_ETHER_50M_SEL>,
+				  <&topckgen CLK_TOP_ETHER_50M_RMII_SEL>;
 		assigned-clock-parents = <&topckgen CLK_TOP_ETHERPLL_125M>,
-					 <&topckgen CLK_TOP_APLL1_D3>;
+					 <&topckgen CLK_TOP_APLL1_D3>,
+					 <&topckgen CLK_TOP_ETHERPLL_50M>;
 		power-domains = <&scpsys MT2712_POWER_DOMAIN_AUDIO>;
 		mediatek,pericfg = <&pericfg>;
 		snps,axi-config = <&stmmac_axi_setup>;
-- 
2.25.1

[PATCH net-next v9 4/6] net: dt-bindings: dwmac: Convert mediatek-dwmac to DT schema

[Biao Huang]

Convert mediatek-dwmac to DT schema, and delete old mediatek-dwmac.txt.
And there are some changes in .yaml than .txt, others almost keep the same:
  1. compatible "const: snps,dwmac-4.20".
  2. delete "snps,reset-active-low;" in example, since driver remove this
     property long ago.
  3. add "snps,reset-delay-us = <0 10000 10000>" in example.
  4. the example is for rgmii interface, keep related properties only.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
 .../bindings/net/mediatek-dwmac.txt           |  91 ----------
 .../bindings/net/mediatek-dwmac.yaml          | 155 ++++++++++++++++++
 2 files changed, 155 insertions(+), 91 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.txt
 create mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.yaml

diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.txt b/Documentation/devicetree/bindings/net/mediatek-dwmac.txt
deleted file mode 100644
index afbcaebf062e..000000000000
--- a/Documentation/devicetree/bindings/net/mediatek-dwmac.txt
+++ /dev/null
@@ -1,91 +0,0 @@
-MediaTek 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 "mediatek,mt2712-gmac" for MT2712 SoC
-- reg:  Address and length of the register set for the device
-- interrupts:  Should contain the MAC interrupts
-- interrupt-names: Should contain a list of interrupt names corresponding to
-	the interrupts in the interrupts property, if available.
-	Should be "macirq" for the main MAC IRQ
-- clocks: Must contain a phandle for each entry in clock-names.
-- clock-names: The name of the clock listed in the clocks property. These are
-	"axi", "apb", "mac_main", "ptp_ref", "rmii_internal" for MT2712 SoC.
-- mac-address: See ethernet.txt in the same directory
-- phy-mode: See ethernet.txt in the same directory
-- mediatek,pericfg: A phandle to the syscon node that control ethernet
-	interface and timing delay.
-
-Optional properties:
-- mediatek,tx-delay-ps: TX clock delay macro value. Default is 0.
-	It should be defined for RGMII/MII interface.
-	It should be defined for RMII interface when the reference clock is from MT2712 SoC.
-- mediatek,rx-delay-ps: RX clock delay macro value. Default is 0.
-	It should be defined for RGMII/MII interface.
-	It should be defined for RMII interface.
-Both delay properties need to be a multiple of 170 for RGMII interface,
-or will round down. Range 0~31*170.
-Both delay properties need to be a multiple of 550 for MII/RMII interface,
-or will round down. Range 0~31*550.
-
-- mediatek,rmii-rxc: boolean property, if present indicates that the RMII
-	reference clock, which is from external PHYs, is connected to RXC pin
-	on MT2712 SoC.
-	Otherwise, is connected to TXC pin.
-- mediatek,rmii-clk-from-mac: boolean property, if present indicates that
-	MT2712 SoC provides the RMII reference clock, which outputs to TXC pin only.
-- mediatek,txc-inverse: boolean property, if present indicates that
-	1. tx clock will be inversed in MII/RGMII case,
-	2. tx clock inside MAC will be inversed relative to reference clock
-	   which is from external PHYs in RMII case, and it rarely happen.
-	3. the reference clock, which outputs to TXC pin will be inversed in RMII case
-	   when the reference clock is from MT2712 SoC.
-- mediatek,rxc-inverse: boolean property, if present indicates that
-	1. rx clock will be inversed in MII/RGMII case.
-	2. reference clock will be inversed when arrived at MAC in RMII case, when
-	   the reference clock is from external PHYs.
-	3. the inside clock, which be sent to MAC, will be inversed in RMII case when
-	   the reference clock is from MT2712 SoC.
-- assigned-clocks: mac_main and ptp_ref clocks
-- assigned-clock-parents: parent clocks of the assigned clocks
-
-Example:
-	eth: ethernet@1101c000 {
-		compatible = "mediatek,mt2712-gmac";
-		reg = <0 0x1101c000 0 0x1300>;
-		interrupts = <GIC_SPI 237 IRQ_TYPE_LEVEL_LOW>;
-		interrupt-names = "macirq";
-		phy-mode ="rgmii-rxid";
-		mac-address = [00 55 7b b5 7d f7];
-		clock-names = "axi",
-			      "apb",
-			      "mac_main",
-			      "ptp_ref",
-			      "rmii_internal";
-		clocks = <&pericfg CLK_PERI_GMAC>,
-			 <&pericfg CLK_PERI_GMAC_PCLK>,
-			 <&topckgen CLK_TOP_ETHER_125M_SEL>,
-			 <&topckgen CLK_TOP_ETHER_50M_SEL>,
-			 <&topckgen CLK_TOP_ETHER_50M_RMII_SEL>;
-		assigned-clocks = <&topckgen CLK_TOP_ETHER_125M_SEL>,
-				  <&topckgen CLK_TOP_ETHER_50M_SEL>,
-				  <&topckgen CLK_TOP_ETHER_50M_RMII_SEL>;
-		assigned-clock-parents = <&topckgen CLK_TOP_ETHERPLL_125M>,
-					 <&topckgen CLK_TOP_APLL1_D3>,
-					 <&topckgen CLK_TOP_ETHERPLL_50M>;
-		power-domains = <&scpsys MT2712_POWER_DOMAIN_AUDIO>;
-		mediatek,pericfg = <&pericfg>;
-		mediatek,tx-delay-ps = <1530>;
-		mediatek,rx-delay-ps = <1530>;
-		mediatek,rmii-rxc;
-		mediatek,txc-inverse;
-		mediatek,rxc-inverse;
-		snps,txpbl = <1>;
-		snps,rxpbl = <1>;
-		snps,reset-gpio = <&pio 87 GPIO_ACTIVE_LOW>;
-		snps,reset-active-low;
-	};
diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
new file mode 100644
index 000000000000..8ad6e19661b8
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
@@ -0,0 +1,155 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/mediatek-dwmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek DWMAC glue layer controller
+
+maintainers:
+  - Biao Huang <biao.huang@mediatek.com>
+
+description:
+  This file documents platform glue layer for stmmac.
+
+# We need a select here so we don't match all nodes with 'snps,dwmac'
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - mediatek,mt2712-gmac
+  required:
+    - compatible
+
+allOf:
+  - $ref: "snps,dwmac.yaml#"
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,mt2712-gmac
+      - const: snps,dwmac-4.20a
+
+  clocks:
+    items:
+      - description: AXI clock
+      - description: APB clock
+      - description: MAC Main clock
+      - description: PTP clock
+      - description: RMII reference clock provided by MAC
+
+  clock-names:
+    items:
+      - const: axi
+      - const: apb
+      - const: mac_main
+      - const: ptp_ref
+      - const: rmii_internal
+
+  mediatek,pericfg:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      The phandle to the syscon node that control ethernet
+      interface and timing delay.
+
+  mediatek,tx-delay-ps:
+    description:
+      The internal TX clock delay (provided by this driver) in nanoseconds.
+      For MT2712 RGMII interface, Allowed value need to be a multiple of 170,
+      or will round down. Range 0~31*170.
+      For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
+      or will round down. Range 0~31*550.
+
+  mediatek,rx-delay-ps:
+    description:
+      The internal RX clock delay (provided by this driver) in nanoseconds.
+      For MT2712 RGMII interface, Allowed value need to be a multiple of 170,
+      or will round down. Range 0~31*170.
+      For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
+      or will round down. Range 0~31*550.
+
+  mediatek,rmii-rxc:
+    type: boolean
+    description:
+      If present, indicates that the RMII reference clock, which is from external
+      PHYs, is connected to RXC pin. Otherwise, is connected to TXC pin.
+
+  mediatek,rmii-clk-from-mac:
+    type: boolean
+    description:
+      If present, indicates that MAC provides the RMII reference clock, which
+      outputs to TXC pin only.
+
+  mediatek,txc-inverse:
+    type: boolean
+    description:
+      If present, indicates that
+      1. tx clock will be inversed in MII/RGMII case,
+      2. tx clock inside MAC will be inversed relative to reference clock
+         which is from external PHYs in RMII case, and it rarely happen.
+      3. the reference clock, which outputs to TXC pin will be inversed in RMII case
+         when the reference clock is from MAC.
+
+  mediatek,rxc-inverse:
+    type: boolean
+    description:
+      If present, indicates that
+      1. rx clock will be inversed in MII/RGMII case.
+      2. reference clock will be inversed when arrived at MAC in RMII case, when
+         the reference clock is from external PHYs.
+      3. the inside clock, which be sent to MAC, will be inversed in RMII case when
+         the reference clock is from MAC.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+  - clocks
+  - clock-names
+  - phy-mode
+  - mediatek,pericfg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt2712-clk.h>
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/mt2712-power.h>
+
+    eth: ethernet@1101c000 {
+        compatible = "mediatek,mt2712-gmac", "snps,dwmac-4.20a";
+        reg = <0x1101c000 0x1300>;
+        interrupts = <GIC_SPI 237 IRQ_TYPE_LEVEL_LOW>;
+        interrupt-names = "macirq";
+        phy-mode ="rgmii-rxid";
+        mac-address = [00 55 7b b5 7d f7];
+        clock-names = "axi",
+                      "apb",
+                      "mac_main",
+                      "ptp_ref",
+                      "rmii_internal";
+        clocks = <&pericfg CLK_PERI_GMAC>,
+                 <&pericfg CLK_PERI_GMAC_PCLK>,
+                 <&topckgen CLK_TOP_ETHER_125M_SEL>,
+                 <&topckgen CLK_TOP_ETHER_50M_SEL>,
+                 <&topckgen CLK_TOP_ETHER_50M_RMII_SEL>;
+        assigned-clocks = <&topckgen CLK_TOP_ETHER_125M_SEL>,
+                          <&topckgen CLK_TOP_ETHER_50M_SEL>,
+                          <&topckgen CLK_TOP_ETHER_50M_RMII_SEL>;
+        assigned-clock-parents = <&topckgen CLK_TOP_ETHERPLL_125M>,
+                                 <&topckgen CLK_TOP_APLL1_D3>,
+                                 <&topckgen CLK_TOP_ETHERPLL_50M>;
+        power-domains = <&scpsys MT2712_POWER_DOMAIN_AUDIO>;
+        mediatek,pericfg = <&pericfg>;
+        mediatek,tx-delay-ps = <1530>;
+        snps,txpbl = <1>;
+        snps,rxpbl = <1>;
+        snps,reset-gpio = <&pio 87 GPIO_ACTIVE_LOW>;
+        snps,reset-delays-us = <0 10000 10000>;
+    };
-- 
2.25.1

Re: [PATCH net-next v9 4/6] net: dt-bindings: dwmac: Convert mediatek-dwmac to DT schema

[Rob Herring]

On Wed, 15 Dec 2021 10:16:50 +0800, Biao Huang wrote:
> Convert mediatek-dwmac to DT schema, and delete old mediatek-dwmac.txt.
> And there are some changes in .yaml than .txt, others almost keep the same:
>   1. compatible "const: snps,dwmac-4.20".
>   2. delete "snps,reset-active-low;" in example, since driver remove this
>      property long ago.
>   3. add "snps,reset-delay-us = <0 10000 10000>" in example.
>   4. the example is for rgmii interface, keep related properties only.
> 
> Signed-off-by: Biao Huang <biao.huang@mediatek.com>
> ---
>  .../bindings/net/mediatek-dwmac.txt           |  91 ----------
>  .../bindings/net/mediatek-dwmac.yaml          | 155 ++++++++++++++++++
>  2 files changed, 155 insertions(+), 91 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.txt
>  create mode 100644 Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> 

Running 'make dtbs_check' with the schema in this patch gives the
following warnings. Consider if they are expected or the schema is
incorrect. These may not be new warnings.

Note that it is not yet a requirement to have 0 warnings for dtbs_check.
This will change in the future.

Full log is available here: https://patchwork.ozlabs.org/patch/1567987


ethernet@1101c000: clock-names: ['axi', 'apb', 'mac_main', 'ptp_ref'] is too short
	arch/arm64/boot/dts/mediatek/mt2712-evb.dt.yaml

ethernet@1101c000: clocks: [[27, 34], [27, 37], [6, 154], [6, 155]] is too short
	arch/arm64/boot/dts/mediatek/mt2712-evb.dt.yaml

ethernet@1101c000: compatible: ['mediatek,mt2712-gmac'] does not contain items matching the given schema
	arch/arm64/boot/dts/mediatek/mt2712-evb.dt.yaml

ethernet@1101c000: compatible: ['mediatek,mt2712-gmac'] is too short
	arch/arm64/boot/dts/mediatek/mt2712-evb.dt.yaml

ethernet@1101c000: Unevaluated properties are not allowed ('compatible', 'reg', 'interrupts', 'interrupt-names', 'mac-address', 'clock-names', 'clocks', 'power-domains', 'snps,axi-config', 'snps,mtl-rx-config', 'snps,mtl-tx-config', 'snps,txpbl', 'snps,rxpbl', 'clk_csr', 'phy-mode', 'phy-handle', 'snps,reset-gpio', 'mdio' were unexpected)
	arch/arm64/boot/dts/mediatek/mt2712-evb.dt.yaml

[PATCH net-next v9 5/6] stmmac: dwmac-mediatek: add support for mt8195

[Biao Huang]

Add Ethernet support for MediaTek SoCs from the mt8195 family.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  | 253 +++++++++++++++++-
 1 file changed, 252 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index 8747aa4403e8..bbb94aeee104 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
@@ -39,6 +39,33 @@
 #define ETH_FINE_DLY_GTXC	BIT(1)
 #define ETH_FINE_DLY_RXC	BIT(0)
 
+/* Peri Configuration register for mt8195 */
+#define MT8195_PERI_ETH_CTRL0		0xFD0
+#define MT8195_RMII_CLK_SRC_INTERNAL	BIT(28)
+#define MT8195_RMII_CLK_SRC_RXC		BIT(27)
+#define MT8195_ETH_INTF_SEL		GENMASK(26, 24)
+#define MT8195_RGMII_TXC_PHASE_CTRL	BIT(22)
+#define MT8195_EXT_PHY_MODE		BIT(21)
+#define MT8195_DLY_GTXC_INV		BIT(12)
+#define MT8195_DLY_GTXC_ENABLE		BIT(5)
+#define MT8195_DLY_GTXC_STAGES		GENMASK(4, 0)
+
+#define MT8195_PERI_ETH_CTRL1		0xFD4
+#define MT8195_DLY_RXC_INV		BIT(25)
+#define MT8195_DLY_RXC_ENABLE		BIT(18)
+#define MT8195_DLY_RXC_STAGES		GENMASK(17, 13)
+#define MT8195_DLY_TXC_INV		BIT(12)
+#define MT8195_DLY_TXC_ENABLE		BIT(5)
+#define MT8195_DLY_TXC_STAGES		GENMASK(4, 0)
+
+#define MT8195_PERI_ETH_CTRL2		0xFD8
+#define MT8195_DLY_RMII_RXC_INV		BIT(25)
+#define MT8195_DLY_RMII_RXC_ENABLE	BIT(18)
+#define MT8195_DLY_RMII_RXC_STAGES	GENMASK(17, 13)
+#define MT8195_DLY_RMII_TXC_INV		BIT(12)
+#define MT8195_DLY_RMII_TXC_ENABLE	BIT(5)
+#define MT8195_DLY_RMII_TXC_STAGES	GENMASK(4, 0)
+
 struct mac_delay_struct {
 	u32 tx_delay;
 	u32 rx_delay;
@@ -57,11 +84,13 @@ struct mediatek_dwmac_plat_data {
 	int num_clks_to_config;
 	bool rmii_clk_from_mac;
 	bool rmii_rxc;
+	bool mac_wol;
 };
 
 struct mediatek_dwmac_variant {
 	int (*dwmac_set_phy_interface)(struct mediatek_dwmac_plat_data *plat);
 	int (*dwmac_set_delay)(struct mediatek_dwmac_plat_data *plat);
+	void (*dwmac_fix_mac_speed)(void *priv, unsigned int speed);
 
 	/* clock ids to be requested */
 	const char * const *clk_list;
@@ -77,6 +106,10 @@ static const char * const mt2712_dwmac_clk_l[] = {
 	"axi", "apb", "mac_main", "ptp_ref", "rmii_internal"
 };
 
+static const char * const mt8195_dwmac_clk_l[] = {
+	"axi", "apb", "mac_cg", "mac_main", "ptp_ref", "rmii_internal"
+};
+
 static int mt2712_set_interface(struct mediatek_dwmac_plat_data *plat)
 {
 	int rmii_clk_from_mac = plat->rmii_clk_from_mac ? RMII_CLK_SRC_INTERNAL : 0;
@@ -267,6 +300,204 @@ static const struct mediatek_dwmac_variant mt2712_gmac_variant = {
 		.tx_delay_max = 17600,
 };
 
+static int mt8195_set_interface(struct mediatek_dwmac_plat_data *plat)
+{
+	int rmii_clk_from_mac = plat->rmii_clk_from_mac ? MT8195_RMII_CLK_SRC_INTERNAL : 0;
+	int rmii_rxc = plat->rmii_rxc ? MT8195_RMII_CLK_SRC_RXC : 0;
+	u32 intf_val = 0;
+
+	/* The clock labeled as "rmii_internal" in mt8195_dwmac_clk_l is needed
+	 * only in RMII(when MAC provides the reference clock), and useless for
+	 * RGMII/MII/RMII(when PHY provides the reference clock).
+	 * num_clks_to_config indicates the real number of clocks should be
+	 * configured, equals to (plat->variant->num_clks - 1) in default for all the case,
+	 * then +1 for rmii_clk_from_mac case.
+	 */
+	plat->num_clks_to_config = plat->variant->num_clks - 1;
+
+	/* select phy interface in top control domain */
+	switch (plat->phy_mode) {
+	case PHY_INTERFACE_MODE_MII:
+		intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_MII);
+		break;
+	case PHY_INTERFACE_MODE_RMII:
+		if (plat->rmii_clk_from_mac)
+			plat->num_clks_to_config++;
+		intf_val |= (rmii_rxc | rmii_clk_from_mac);
+		intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_RMII);
+		break;
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+		intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_RGMII);
+		break;
+	default:
+		dev_err(plat->dev, "phy interface not supported\n");
+		return -EINVAL;
+	}
+
+	/* MT8195 only support external PHY */
+	intf_val |= MT8195_EXT_PHY_MODE;
+
+	regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL0, intf_val);
+
+	return 0;
+}
+
+static void mt8195_delay_ps2stage(struct mediatek_dwmac_plat_data *plat)
+{
+	struct mac_delay_struct *mac_delay = &plat->mac_delay;
+
+	/* 290ps per stage */
+	mac_delay->tx_delay /= 290;
+	mac_delay->rx_delay /= 290;
+}
+
+static void mt8195_delay_stage2ps(struct mediatek_dwmac_plat_data *plat)
+{
+	struct mac_delay_struct *mac_delay = &plat->mac_delay;
+
+	/* 290ps per stage */
+	mac_delay->tx_delay *= 290;
+	mac_delay->rx_delay *= 290;
+}
+
+static int mt8195_set_delay(struct mediatek_dwmac_plat_data *plat)
+{
+	struct mac_delay_struct *mac_delay = &plat->mac_delay;
+	u32 gtxc_delay_val = 0, delay_val = 0, rmii_delay_val = 0;
+
+	mt8195_delay_ps2stage(plat);
+
+	switch (plat->phy_mode) {
+	case PHY_INTERFACE_MODE_MII:
+		delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE, !!mac_delay->tx_delay);
+		delay_val |= FIELD_PREP(MT8195_DLY_TXC_STAGES, mac_delay->tx_delay);
+		delay_val |= FIELD_PREP(MT8195_DLY_TXC_INV, mac_delay->tx_inv);
+
+		delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
+		delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, mac_delay->rx_delay);
+		delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, mac_delay->rx_inv);
+		break;
+	case PHY_INTERFACE_MODE_RMII:
+		if (plat->rmii_clk_from_mac) {
+			/* case 1: mac provides the rmii reference clock,
+			 * and the clock output to TXC pin.
+			 * The egress timing can be adjusted by RMII_TXC delay macro circuit.
+			 * The ingress timing can be adjusted by RMII_RXC delay macro circuit.
+			 */
+			rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_ENABLE,
+						     !!mac_delay->tx_delay);
+			rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_STAGES,
+						     mac_delay->tx_delay);
+			rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_INV,
+						     mac_delay->tx_inv);
+
+			rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_ENABLE,
+						     !!mac_delay->rx_delay);
+			rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_STAGES,
+						     mac_delay->rx_delay);
+			rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_INV,
+						     mac_delay->rx_inv);
+		} else {
+			/* case 2: the rmii reference clock is from external phy,
+			 * and the property "rmii_rxc" indicates which pin(TXC/RXC)
+			 * the reference clk is connected to. The reference clock is a
+			 * received signal, so rx_delay/rx_inv are used to indicate
+			 * the reference clock timing adjustment
+			 */
+			if (plat->rmii_rxc) {
+				/* the rmii reference clock from outside is connected
+				 * to RXC pin, the reference clock will be adjusted
+				 * by RXC delay macro circuit.
+				 */
+				delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE,
+							!!mac_delay->rx_delay);
+				delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES,
+							mac_delay->rx_delay);
+				delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV,
+							mac_delay->rx_inv);
+			} else {
+				/* the rmii reference clock from outside is connected
+				 * to TXC pin, the reference clock will be adjusted
+				 * by TXC delay macro circuit.
+				 */
+				delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE,
+							!!mac_delay->rx_delay);
+				delay_val |= FIELD_PREP(MT8195_DLY_TXC_STAGES,
+							mac_delay->rx_delay);
+				delay_val |= FIELD_PREP(MT8195_DLY_TXC_INV,
+							mac_delay->rx_inv);
+			}
+		}
+		break;
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+		gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_ENABLE, !!mac_delay->tx_delay);
+		gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_STAGES, mac_delay->tx_delay);
+		gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_INV, mac_delay->tx_inv);
+
+		delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, !!mac_delay->rx_delay);
+		delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, mac_delay->rx_delay);
+		delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, mac_delay->rx_inv);
+
+		break;
+	default:
+		dev_err(plat->dev, "phy interface not supported\n");
+		return -EINVAL;
+	}
+
+	regmap_update_bits(plat->peri_regmap,
+			   MT8195_PERI_ETH_CTRL0,
+			   MT8195_RGMII_TXC_PHASE_CTRL |
+			   MT8195_DLY_GTXC_INV |
+			   MT8195_DLY_GTXC_ENABLE |
+			   MT8195_DLY_GTXC_STAGES,
+			   gtxc_delay_val);
+	regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL1, delay_val);
+	regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL2, rmii_delay_val);
+
+	mt8195_delay_stage2ps(plat);
+
+	return 0;
+}
+
+static void mt8195_fix_mac_speed(void *priv, unsigned int speed)
+{
+	struct mediatek_dwmac_plat_data *priv_plat = priv;
+
+	if ((phy_interface_mode_is_rgmii(priv_plat->phy_mode))) {
+		/* prefer 2ns fixed delay which is controlled by TXC_PHASE_CTRL,
+		 * when link speed is 1Gbps with RGMII interface,
+		 * Fall back to delay macro circuit for 10/100Mbps link speed.
+		 */
+		if (speed == SPEED_1000)
+			regmap_update_bits(priv_plat->peri_regmap,
+					   MT8195_PERI_ETH_CTRL0,
+					   MT8195_RGMII_TXC_PHASE_CTRL |
+					   MT8195_DLY_GTXC_ENABLE |
+					   MT8195_DLY_GTXC_INV |
+					   MT8195_DLY_GTXC_STAGES,
+					   MT8195_RGMII_TXC_PHASE_CTRL);
+		else
+			mt8195_set_delay(priv_plat);
+	}
+}
+
+static const struct mediatek_dwmac_variant mt8195_gmac_variant = {
+	.dwmac_set_phy_interface = mt8195_set_interface,
+	.dwmac_set_delay = mt8195_set_delay,
+	.dwmac_fix_mac_speed = mt8195_fix_mac_speed,
+	.clk_list = mt8195_dwmac_clk_l,
+	.num_clks = ARRAY_SIZE(mt8195_dwmac_clk_l),
+	.dma_bit_mask = 35,
+	.rx_delay_max = 9280,
+	.tx_delay_max = 9280,
+};
+
 static int mediatek_dwmac_config_dt(struct mediatek_dwmac_plat_data *plat)
 {
 	struct mac_delay_struct *mac_delay = &plat->mac_delay;
@@ -307,6 +538,7 @@ static int mediatek_dwmac_config_dt(struct mediatek_dwmac_plat_data *plat)
 	mac_delay->rx_inv = of_property_read_bool(plat->np, "mediatek,rxc-inverse");
 	plat->rmii_rxc = of_property_read_bool(plat->np, "mediatek,rmii-rxc");
 	plat->rmii_clk_from_mac = of_property_read_bool(plat->np, "mediatek,rmii-clk-from-mac");
+	plat->mac_wol = of_property_read_bool(plat->np, "mediatek,mac-wol");
 
 	return 0;
 }
@@ -383,6 +615,7 @@ static int mediatek_dwmac_clks_config(void *priv, bool enabled)
 
 	return ret;
 }
+
 static int mediatek_dwmac_probe(struct platform_device *pdev)
 {
 	struct mediatek_dwmac_plat_data *priv_plat;
@@ -420,7 +653,7 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 		return PTR_ERR(plat_dat);
 
 	plat_dat->interface = priv_plat->phy_mode;
-	plat_dat->use_phy_wol = 1;
+	plat_dat->use_phy_wol = priv_plat->mac_wol ? 0 : 1;
 	plat_dat->riwt_off = 1;
 	plat_dat->maxmtu = ETH_DATA_LEN;
 	plat_dat->addr64 = priv_plat->variant->dma_bit_mask;
@@ -428,7 +661,23 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 	plat_dat->init = mediatek_dwmac_init;
 	plat_dat->exit = mediatek_dwmac_exit;
 	plat_dat->clks_config = mediatek_dwmac_clks_config;
+	if (priv_plat->variant->dwmac_fix_mac_speed)
+		plat_dat->fix_mac_speed = priv_plat->variant->dwmac_fix_mac_speed;
+	plat_dat->safety_feat_cfg = devm_kzalloc(&pdev->dev,
+						 sizeof(*plat_dat->safety_feat_cfg),
+						 GFP_KERNEL);
+	if (!plat_dat->safety_feat_cfg)
+		return -ENOMEM;
 
+	plat_dat->safety_feat_cfg->tsoee = 1;
+	plat_dat->safety_feat_cfg->mrxpee = 0;
+	plat_dat->safety_feat_cfg->mestee = 1;
+	plat_dat->safety_feat_cfg->mrxee = 1;
+	plat_dat->safety_feat_cfg->mtxee = 1;
+	plat_dat->safety_feat_cfg->epsi = 0;
+	plat_dat->safety_feat_cfg->edpp = 1;
+	plat_dat->safety_feat_cfg->prtyen = 1;
+	plat_dat->safety_feat_cfg->tmouten = 1;
 	mediatek_dwmac_init(pdev, priv_plat);
 
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
@@ -443,6 +692,8 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 static const struct of_device_id mediatek_dwmac_match[] = {
 	{ .compatible = "mediatek,mt2712-gmac",
 	  .data = &mt2712_gmac_variant },
+	{ .compatible = "mediatek,mt8195-gmac",
+	  .data = &mt8195_gmac_variant },
 	{ }
 };
 
-- 
2.25.1

[PATCH net-next v9 6/6] net: dt-bindings: dwmac: add support for mt8195

[Biao Huang]

Add binding document for the ethernet on mt8195.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
 .../bindings/net/mediatek-dwmac.yaml          | 42 ++++++++++++++-----
 1 file changed, 32 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
index 8ad6e19661b8..44d55146def4 100644
--- a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
@@ -19,6 +19,7 @@ select:
       contains:
         enum:
           - mediatek,mt2712-gmac
+          - mediatek,mt8195-gmac
   required:
     - compatible
 
@@ -27,26 +28,37 @@ allOf:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - mediatek,mt2712-gmac
-      - const: snps,dwmac-4.20a
+    oneOf:
+      - items:
+          - enum:
+              - mediatek,mt2712-gmac
+          - const: snps,dwmac-4.20a
+      - items:
+          - enum:
+              - mediatek,mt8195-gmac
+          - const: snps,dwmac-5.10a
 
   clocks:
+    minItems: 5
     items:
       - description: AXI clock
       - description: APB clock
       - description: MAC Main clock
       - description: PTP clock
       - description: RMII reference clock provided by MAC
+      - description: MAC clock gate
 
   clock-names:
-    items:
-      - const: axi
-      - const: apb
-      - const: mac_main
-      - const: ptp_ref
-      - const: rmii_internal
+    minItems: 5
+    maxItems: 6
+    contains:
+      enum:
+        - axi
+        - apb
+        - mac_main
+        - ptp_ref
+        - rmii_internal
+        - mac_cg
 
   mediatek,pericfg:
     $ref: /schemas/types.yaml#/definitions/phandle
@@ -61,6 +73,8 @@ properties:
       or will round down. Range 0~31*170.
       For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
       or will round down. Range 0~31*550.
+      For MT8195 RGMII/RMII/MII interface, Allowed value need to be a multiple of 290,
+      or will round down. Range 0~31*290.
 
   mediatek,rx-delay-ps:
     description:
@@ -69,6 +83,8 @@ properties:
       or will round down. Range 0~31*170.
       For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
       or will round down. Range 0~31*550.
+      For MT8195 RGMII/RMII/MII interface, Allowed value need to be a multiple
+      of 290, or will round down. Range 0~31*290.
 
   mediatek,rmii-rxc:
     type: boolean
@@ -102,6 +118,12 @@ properties:
       3. the inside clock, which be sent to MAC, will be inversed in RMII case when
          the reference clock is from MAC.
 
+  mediatek,mac-wol:
+    type: boolean
+    description:
+      If present, indicates that MAC supports WOL(Wake-On-LAN), and MAC WOL will be enabled.
+      Otherwise, PHY WOL is perferred.
+
 required:
   - compatible
   - reg
-- 
2.25.1

Re: [PATCH net-next v9 6/6] net: dt-bindings: dwmac: add support for mt8195

[Rob Herring]

On Wed, Dec 15, 2021 at 10:16:52AM +0800, Biao Huang wrote:
> Add binding document for the ethernet on mt8195.
> 
> Signed-off-by: Biao Huang <biao.huang@mediatek.com>
> ---
>  .../bindings/net/mediatek-dwmac.yaml          | 42 ++++++++++++++-----
>  1 file changed, 32 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> index 8ad6e19661b8..44d55146def4 100644
> --- a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> @@ -19,6 +19,7 @@ select:
>        contains:
>          enum:
>            - mediatek,mt2712-gmac
> +          - mediatek,mt8195-gmac
>    required:
>      - compatible
>  
> @@ -27,26 +28,37 @@ allOf:
>  
>  properties:
>    compatible:
> -    items:
> -      - enum:
> -          - mediatek,mt2712-gmac
> -      - const: snps,dwmac-4.20a
> +    oneOf:
> +      - items:
> +          - enum:
> +              - mediatek,mt2712-gmac
> +          - const: snps,dwmac-4.20a
> +      - items:
> +          - enum:
> +              - mediatek,mt8195-gmac
> +          - const: snps,dwmac-5.10a
>  
>    clocks:
> +    minItems: 5

As before, you need 'minItems: 4' in the previous patch.

If you aren't clear what's needed, run 'make dtbs_checks' yourself 
before submitting again.

>      items:
>        - description: AXI clock
>        - description: APB clock
>        - description: MAC Main clock
>        - description: PTP clock
>        - description: RMII reference clock provided by MAC
> +      - description: MAC clock gate
>  
>    clock-names:
> -    items:
> -      - const: axi
> -      - const: apb
> -      - const: mac_main
> -      - const: ptp_ref
> -      - const: rmii_internal
> +    minItems: 5
> +    maxItems: 6
> +    contains:

No, you just threw out the order requirements. And this schema will be 
true with just 1 of the strings below plus any other strings. For 
example, this will pass:

clock-names = "foo", "bar", "axi", "baz", "rob";

> +      enum:
> +        - axi
> +        - apb
> +        - mac_main
> +        - ptp_ref
> +        - rmii_internal
> +        - mac_cg
>  
>    mediatek,pericfg:
>      $ref: /schemas/types.yaml#/definitions/phandle
> @@ -61,6 +73,8 @@ properties:
>        or will round down. Range 0~31*170.
>        For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
>        or will round down. Range 0~31*550.
> +      For MT8195 RGMII/RMII/MII interface, Allowed value need to be a multiple of 290,
> +      or will round down. Range 0~31*290.
>  
>    mediatek,rx-delay-ps:
>      description:
> @@ -69,6 +83,8 @@ properties:
>        or will round down. Range 0~31*170.
>        For MT2712 RMII/MII interface, Allowed value need to be a multiple of 550,
>        or will round down. Range 0~31*550.
> +      For MT8195 RGMII/RMII/MII interface, Allowed value need to be a multiple
> +      of 290, or will round down. Range 0~31*290.
>  
>    mediatek,rmii-rxc:
>      type: boolean
> @@ -102,6 +118,12 @@ properties:
>        3. the inside clock, which be sent to MAC, will be inversed in RMII case when
>           the reference clock is from MAC.
>  
> +  mediatek,mac-wol:
> +    type: boolean
> +    description:
> +      If present, indicates that MAC supports WOL(Wake-On-LAN), and MAC WOL will be enabled.
> +      Otherwise, PHY WOL is perferred.
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.25.1
> 
> 

Re: [PATCH net-next v9 6/6] net: dt-bindings: dwmac: add support for mt8195

[Biao Huang]

Dear Rob,
	Thanks for your comments~
On Wed, 2021-12-15 at 16:13 -0600, Rob Herring wrote:
> On Wed, Dec 15, 2021 at 10:16:52AM +0800, Biao Huang wrote:
> > Add binding document for the ethernet on mt8195.
> > 
> > Signed-off-by: Biao Huang <biao.huang@mediatek.com>
> > ---
> >  .../bindings/net/mediatek-dwmac.yaml          | 42 ++++++++++++++-
> > ----
> >  1 file changed, 32 insertions(+), 10 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/net/mediatek-
> > dwmac.yaml b/Documentation/devicetree/bindings/net/mediatek-
> > dwmac.yaml
> > index 8ad6e19661b8..44d55146def4 100644
> > --- a/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> > +++ b/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> > @@ -19,6 +19,7 @@ select:
> >        contains:
> >          enum:
> >            - mediatek,mt2712-gmac
> > +          - mediatek,mt8195-gmac
> >    required:
> >      - compatible
> >  
> > @@ -27,26 +28,37 @@ allOf:
> >  
> >  properties:
> >    compatible:
> > -    items:
> > -      - enum:
> > -          - mediatek,mt2712-gmac
> > -      - const: snps,dwmac-4.20a
> > +    oneOf:
> > +      - items:
> > +          - enum:
> > +              - mediatek,mt2712-gmac
> > +          - const: snps,dwmac-4.20a
> > +      - items:
> > +          - enum:
> > +              - mediatek,mt8195-gmac
> > +          - const: snps,dwmac-5.10a
> >  
> >    clocks:
> > +    minItems: 5
> 
> As before, you need 'minItems: 4' in the previous patch.
> 
> If you aren't clear what's needed, run 'make dtbs_checks' yourself 
> before submitting again.

But as modified in "[PATCH net-next v9 3/6] arm64: dts: mt2712: update
ethernet device node", we expect "minItems: 5".

run 'make dtbs_checks' with "[PATCH net-next v9 3/6] arm64: dts:
mt2712: update ethernet device node" applied, will not report logs such
as "ethernet@1101c000: clock-names: ['axi', 'apb', 'mac_main',
'ptp_ref'] is too short".

Should it be fine if I keep "minItems:5"?
> 
> >      items:
> >        - description: AXI clock
> >        - description: APB clock
> >        - description: MAC Main clock
> >        - description: PTP clock
> >        - description: RMII reference clock provided by MAC
> > +      - description: MAC clock gate
> >  
> >    clock-names:
> > -    items:
> > -      - const: axi
> > -      - const: apb
> > -      - const: mac_main
> > -      - const: ptp_ref
> > -      - const: rmii_internal
> > +    minItems: 5
> > +    maxItems: 6
> > +    contains:
> 
> No, you just threw out the order requirements. And this schema will
> be 
> true with just 1 of the strings below plus any other strings. For 
> example, this will pass:
> 
> clock-names = "foo", "bar", "axi", "baz", "rob";
I misunderstood this schema, 
and how about the following description:

clock-names:
  minItems: 5
  maxItems: 6
  items:
    - const: axi
    - const: apb
    - const: mac_main
    - const: ptp_ref
    - const: rmii_internal
    - const: mac_cg

Regards!
> 
> > +      enum:
> > +        - axi
> > +        - apb
> > +        - mac_main
> > +        - ptp_ref
> > +        - rmii_internal
> > +        - mac_cg
> >  
> >    mediatek,pericfg:
> >      $ref: /schemas/types.yaml#/definitions/phandle
> > @@ -61,6 +73,8 @@ properties:
> >        or will round down. Range 0~31*170.
> >        For MT2712 RMII/MII interface, Allowed value need to be a
> > multiple of 550,
> >        or will round down. Range 0~31*550.
> > +      For MT8195 RGMII/RMII/MII interface, Allowed value need to
> > be a multiple of 290,
> > +      or will round down. Range 0~31*290.
> >  
> >    mediatek,rx-delay-ps:
> >      description:
> > @@ -69,6 +83,8 @@ properties:
> >        or will round down. Range 0~31*170.
> >        For MT2712 RMII/MII interface, Allowed value need to be a
> > multiple of 550,
> >        or will round down. Range 0~31*550.
> > +      For MT8195 RGMII/RMII/MII interface, Allowed value need to
> > be a multiple
> > +      of 290, or will round down. Range 0~31*290.
> >  
> >    mediatek,rmii-rxc:
> >      type: boolean
> > @@ -102,6 +118,12 @@ properties:
> >        3. the inside clock, which be sent to MAC, will be inversed
> > in RMII case when
> >           the reference clock is from MAC.
> >  
> > +  mediatek,mac-wol:
> > +    type: boolean
> > +    description:
> > +      If present, indicates that MAC supports WOL(Wake-On-LAN),
> > and MAC WOL will be enabled.
> > +      Otherwise, PHY WOL is perferred.
> > +
> >  required:
> >    - compatible
> >    - reg
> > -- 
> > 2.25.1
> > 
> >