[RFC][PATCH 2/2] arm64: dts: amlogic: t7: SDCard, Ethernet and Clocking

From: Lucas Tanure
Date: Mon Mar 18 2024 - 07:44:28 EST

Test Clocking, SDCard and Ethernet for Khadas Vim4.

This is RFC patch that enables SDCard, Ethernet and Clocking
for Amlogic T7 soc.
In this current state the patch doesn't work and gives a kernel
panic when probing the meson-axg-mmc for the SDCard.
DO NOT MERGE.

Signed-off-by: Lucas Tanure <tanure@xxxxxxxxx>
---
.../amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 66 ++++++
arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 189 ++++++++++++++++++
2 files changed, 255 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
index fffdab96b12e..473649223512 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
@@ -6,6 +6,8 @@
/dts-v1/;

#include "amlogic-t7.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/gpio/amlogic,t7-periphs-pinctrl.h>

/ {
model = "Khadas vim4";
@@ -44,6 +46,27 @@ xtal: xtal-clk {
clock-output-names = "xtal";
#clock-cells = <0>;
};
+
+ sdcard_power: regulator-sdcard {
+ compatible = "regulator-fixed";
+ regulator-name = "SDCARD_POWER";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio GPIOD_11 GPIO_ACTIVE_LOW>;
+ regulator-boot-on;
+ enable-active-low;
+ regulator-always-on;
+ };
+
+ vddio_card: gpio-regulator {
+ compatible = "regulator-gpio";
+ regulator-name = "VDDIO_CARD";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ gpios = <&gpio GPIOD_9 GPIO_ACTIVE_HIGH>;
+ gpios-states = <1>;
+ states = <1800000 1 3300000 0>;
+ };

};

@@ -52,3 +75,46 @@ &uart_a {
clocks = <&xtal>, <&xtal>, <&xtal>;
clock-names = "xtal", "pclk", "baud";
};
+
+/* SD card */
+&sd_emmc_b {
+ status = "okay";
+ pinctrl-0 = <&sd_all_pins>;
+ pinctrl-1 = <&sd_1bit_pins>;
+ pinctrl-2 = <&sd_clk_gate_pins>;
+ pinctrl-names = "sd_default",
+ "sd_1bit_pins",
+ "clk-gate";
+ bus-width = <4>;
+ cap-sd-highspeed;
+ sd-uhs-sdr12;
+ sd-uhs-sdr25;
+ sd-uhs-sdr50;
+ sd-uhs-sdr104;
+ max-frequency = <200000000>;
+
+ disable-wp;
+
+ cd-gpios = <&gpio GPIOC_6 GPIO_ACTIVE_HIGH>;
+ //dat1-gpios = <&gpio GPIOC_1 GPIO_ACTIVE_HIGH>;
+ vmmc-supply = <&sdcard_power>;
+ vqmmc-supply = <&vddio_card>;
+};
+
+&ext_mdio {
+ external_phy: ethernet-phy@0 {
+ reg = <0>;
+ max-speed = <1000>;
+ };
+};
+
+&ethmac {
+ pinctrl-0 = <&eth_pins>, <&eth_rgmii_pins>;
+ pinctrl-names = "default";
+ status = "okay";
+ phy-mode = "rgmii";
+ phy-handle = <&external_phy>;
+ mc_val = <0x1621>;
+ cali_val = <0xa0000>;
+ amlogic,tx-delay-ns = <2>;
+};
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
index 5248bdf824ea..376b352697b7 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
@@ -5,6 +5,8 @@

#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/amlogic,t7-pwrc.h>
+#include <dt-bindings/clock/amlogic,t7-pll-clkc.h>
+#include <dt-bindings/clock/amlogic,t7-peripherals-clkc.h>

/ {
interrupt-parent = <&gic>;
@@ -148,6 +150,42 @@ apb4: bus@fe000000 {
#address-cells = <2>;
#size-cells = <2>;
ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
+
+ clkc_periphs: clock-controller@0 {
+ compatible = "amlogic,t7-peripherals-clkc";
+ reg = <0x0 0x0 0x0 0x49c>;
+ clocks = <&clkc_pll CLKID_FCLK_DIV2>,
+ <&clkc_pll CLKID_FCLK_DIV2P5>,
+ <&clkc_pll CLKID_FCLK_DIV3>,
+ <&clkc_pll CLKID_FCLK_DIV4>,
+ <&clkc_pll CLKID_FCLK_DIV5>,
+ <&clkc_pll CLKID_FCLK_DIV7>,
+ <&clkc_pll CLKID_HIFI_PLL>,
+ <&clkc_pll CLKID_GP0_PLL>,
+ <&clkc_pll CLKID_GP1_PLL>,
+ <&clkc_pll CLKID_MPLL0>,
+ <&clkc_pll CLKID_MPLL1>,
+ <&clkc_pll CLKID_MPLL2>,
+ <&clkc_pll CLKID_MPLL3>,
+ <&clkc_pll CLKID_MPLL_50M_DIV>,
+ <&clkc_pll CLKID_HDMI_PLL>,
+ <&xtal>;
+ clock-names = "fclk_div2", "fclk_div2p5", "fclk_div3",
+ "fclk_div4", "fclk_div5", "fclk_div7",
+ "hifi_pll", "gp0_pll", "gp1_pll",
+ "mpll0", "mpll1", "mpll2", "mpll3",
+ "mpll_50m_div", "hdmi_pll", "xtal";
+ #clock-cells = <1>;
+ };
+
+ clkc_pll: clock-controller {
+ compatible = "amlogic,t7-pll-clkc";
+ #clock-cells = <1>;
+ reg = <0x0 0x8000 0x0 0x320>;
+ clocks = <&xtal>;
+ clock-names = "xtal";
+ status = "okay";
+ };

watchdog@2100 {
compatible = "amlogic,t7-wdt";
@@ -155,6 +193,41 @@ watchdog@2100 {
clocks = <&xtal>;
};

+ eth_phy: mdio-multiplexer@28000 {
+ compatible = "amlogic,g12a-mdio-mux";
+ reg = <0x0 0x28000 0x0 0xa4>;
+
+ clocks = <&clkc_periphs CLKID_ETHPHY>,
+ <&xtal>,
+ <&clkc_pll CLKID_MPLL_50M>;
+ clock-names = "pclk", "clkin0", "clkin1";
+ mdio-parent-bus = <&mdio0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ enet_type = <5>;
+ tx_amp_src = <0xFE010330>;
+
+ ext_mdio: mdio@0 {
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ int_mdio: mdio@1 {
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ internal_ephy: ethernet_phy@8 {
+ compatible = "ethernet-phy-id0180.3301",
+ "ethernet-phy-ieee802.3-c22";
+ interrupts = <GIC_SPI 340 IRQ_TYPE_LEVEL_HIGH>;
+ reg = <8>;
+ max-speed = <100>;
+ };
+ };
+ };
+
periphs_pinctrl: pinctrl@4000 {
compatible = "amlogic,t7-periphs-pinctrl";
#address-cells = <2>;
@@ -187,7 +260,123 @@ uart_a: serial@78000 {
interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
status = "disabled";
};
+
+ sd_emmc_b: sd@8a000 {
+ compatible = "amlogic,meson-axg-mmc";
+ reg = <0x0 0x8a000 0x0 0x800>;
+ interrupts = <GIC_SPI 177 IRQ_TYPE_EDGE_RISING>;
+ status = "disabled";
+ clocks = <&clkc_periphs CLKID_SD_EMMC_B>,
+ <&clkc_periphs CLKID_SD_EMMC_B_CLK_MUX>,
+ <&clkc_periphs CLKID_SD_EMMC_B_CLK>,
+ <&xtal>,
+ <&clkc_pll CLKID_FCLK_DIV2>;
+ clock-names = "core", "mux0", "mux1", "clkin0", "clkin1";
+ card_type = <5>;
+ use_intf3_tuning;
+ mmc_debug_flag;
+ };
+
+ };
+
+ ethmac: ethernet@fdc00000 {
+ compatible = "amlogic,meson-axg-dwmac", "snps,dwmac-4.00";
+ reg = <0x0 0xfdc00000 0x0 0x10000>,
+ <0x0 0xfe024000 0x0 0x8>;
+ interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "macirq";
+ power-domains = <&pwrc PWRC_T7_ETH_ID>;
+ clocks = <&clkc_periphs CLKID_ETH>,
+ <&clkc_pll CLKID_FCLK_DIV2>,
+ <&clkc_pll CLKID_MPLL2>;
+ clock-names = "stmmaceth", "clkin0", "clkin1";
+ rx-fifo-depth = <4096>;
+ tx-fifo-depth = <2048>;
+
+ internal_phy = <1>;
+ status = "disabled";
+
+ mdio0: mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "snps,dwmac-mdio";
+ };
+ };
+ };
+};
+
+&periphs_pinctrl {
+ sd_all_pins:sd_all_pins {
+ mux {
+ groups = "sdcard_d0",
+ "sdcard_d1",
+ "sdcard_d2",
+ "sdcard_d3",
+ "sdcard_cmd";
+ function = "sdcard";
+ bias-pull-up;
+ drive-strength-microamp = <4000>;
+ };
+ mux1 {
+ groups = "sdcard_clk";
+ function = "sdcard";
+ bias-pull-up;
+ drive-strength-microamp = <4000>;
+ };
+ };
+
+ sd_1bit_pins:sd_1bit_pins {
+ mux {
+ groups = "sdcard_d0",
+ "sdcard_cmd";
+ function = "sdcard";
+ bias-pull-up;
+ drive-strength-microamp = <4000>;
+ };
+ mux1 {
+ groups = "sdcard_clk";
+ function = "sdcard";
+ bias-pull-up;
+ drive-strength-microamp = <4000>;
};
+ };
+
+ sd_clk_gate_pins: sd_clk_gate {
+ mux {
+ groups = "GPIOC_4";
+ function = "gpio_periphs";
+ bias-pull-down;
+ drive-strength-microamp = <4000>;
+ };
+ };

+ eth_pins: eth {
+ mux {
+ groups = "eth_mdio",
+ "eth_mdc",
+ "eth_rgmii_rx_clk",
+ "eth_rx_dv",
+ "eth_rxd0",
+ "eth_rxd1",
+ "eth_txen",
+ "eth_txd0",
+ "eth_txd1";
+ function = "eth";
+ drive-strength-microamp = <4000>;
+ bias-disable;
+ };
+ };
+
+ eth_rgmii_pins: eth-rgmii {
+ mux {
+ groups = "eth_rxd2_rgmii",
+ "eth_rxd3_rgmii",
+ "eth_rgmii_tx_clk",
+ "eth_txd2_rgmii",
+ "eth_txd3_rgmii";
+ function = "eth";
+ drive-strength-microamp = <4000>;
+ bias-disable;
+ };
};
};
--
2.44.0