]> git.dujemihanovic.xyz Git - u-boot.git/commitdiff
arm64: zynqmp: Add support for vpk120-revA
authorMichal Simek <michal.simek@amd.com>
Wed, 27 Sep 2023 09:53:31 +0000 (11:53 +0200)
committerMichal Simek <michal.simek@amd.com>
Mon, 9 Oct 2023 10:12:30 +0000 (12:12 +0200)
Board contains two systems. The primary is Versal VP1202 ACAP device and
the secondary is ZynqMP zu4 which acts as system controller. The patch is
describing only ZynqMP system controller part.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/bd8b79d7c6693e90e12bce422f8ed00f2f43c9ae.1695808407.git.michal.simek@amd.com
arch/arm/dts/Makefile
arch/arm/dts/zynqmp-vpk120-revA.dts [new file with mode: 0644]

index d1b28a6d02ed4bf53c9acde4680234d082d2872d..fbce328acafe747a47435635b7fcd2b4b86d63dc 100644 (file)
@@ -421,6 +421,7 @@ dtb-$(CONFIG_ARCH_ZYNQMP) += \
        zynqmp-sck-kv-g-revA.dtbo               \
        zynqmp-sck-kv-g-revB.dtbo               \
        zynqmp-topic-miamimp-xilinx-xdp-v1r1.dtb        \
+       zynqmp-vpk120-revA.dtb                  \
        zynqmp-zcu100-revC.dtb                  \
        zynqmp-zcu102-revA.dtb                  \
        zynqmp-zcu102-revB.dtb                  \
diff --git a/arch/arm/dts/zynqmp-vpk120-revA.dts b/arch/arm/dts/zynqmp-vpk120-revA.dts
new file mode 100644 (file)
index 0000000..66919f5
--- /dev/null
@@ -0,0 +1,574 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * dts file for Xilinx ZynqMP VPK120 RevA System Controller
+ *
+ * (C) Copyright 2021 - 2022, Xilinx, Inc.
+ * (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek@amd.com>
+ */
+/dts-v1/;
+
+#include "zynqmp.dtsi"
+#include "zynqmp-clk-ccf.dtsi"
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/pinctrl-zynqmp.h>
+#include <dt-bindings/phy/phy.h>
+
+/ {
+       model = "ZynqMP System Controller on VPK120 board RevA";
+       compatible = "xlnx,zynqmp-vpk120-revA",
+                    "xlnx,zynqmp-vpk120", "xlnx,zynqmp";
+
+       aliases {
+               ethernet0 = &gem0;
+               i2c0 = &i2c0;
+               i2c1 = &i2c1;
+               mmc0 = &sdhci0;
+               serial0 = &uart0;
+               serial1 = &dcc;
+               spi0 = &qspi;
+               usb0 = &usb0;
+               usb1 = &usb1;
+               nvmem0 = &eeprom;
+       };
+
+       chosen {
+               bootargs = "earlycon";
+               stdout-path = "serial0:115200n8";
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x0 0x0 0x80000000>;
+       };
+
+       gpio-keys {
+               compatible = "gpio-keys";
+               autorepeat;
+               sw16 {
+                       label = "sw16";
+                       gpios = <&gpio 10 GPIO_ACTIVE_HIGH>;
+                       linux,code = <BTN_MISC>;
+                       wakeup-source;
+                       autorepeat;
+               };
+       };
+
+       leds {
+               compatible = "gpio-leds";
+               heartbeat-led { /* ds40 */
+                       label = "heartbeat";
+                       gpios = <&gpio 9 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+               };
+       };
+
+       si5332_0: si5332_0 { /* ps_ref_clk */
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <33333333>;
+       };
+
+       si5332_1: si5332_1 { /* clk0_sgmii */
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <33333333>; /* FIXME */
+       };
+
+       si5332_2: si5332_2 { /* clk1_usb */
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <27000000>;
+       };
+};
+
+&qspi { /* MIO 0-5 */
+       status = "okay";
+       flash@0 {
+               compatible = "m25p80", "jedec,spi-nor"; /* mt25qu512abb8e12 512Mib */
+               #address-cells = <1>;
+               #size-cells = <1>;
+               reg = <0>;
+               spi-tx-bus-width = <4>;
+               spi-rx-bus-width = <4>;
+               spi-max-frequency = <108000000>;
+               partition@0 { /* for testing purpose */
+                       label = "qspi";
+                       reg = <0 0x4000000>;
+               };
+       };
+};
+
+&sdhci0 { /* emmc MIO 13-23 - with some settings MTFC16GAPALBH 16GB */
+       status = "okay";
+       non-removable;
+       disable-wp;
+       bus-width = <8>;
+       xlnx,mio-bank = <0>;
+};
+
+&uart0 { /* uart0 MIO38-39 */
+       status = "okay";
+       bootph-all;
+};
+
+&gem0 {
+       status = "okay";
+       phy-handle = <&phy0>;
+       phy-mode = "sgmii"; /* DTG generates this properly 1512 */
+       is-internal-pcspma;
+       /* phys = <&psgtr 0 PHY_TYPE_SGMII 0 0>; */
+       /* phy-reset-gpios = <&gpio 142 GPIO_ACTIVE_LOW>; */
+       phy0: ethernet-phy@0 {
+               reg = <0>;
+       };
+};
+
+&gpio {
+       status = "okay";
+       gpio-line-names = "QSPI_CLK", "QSPI_DQ1", "QSPI_DQ2", "QSPI_DQ3", "QSPI_DQ0", /* 0 - 4 */
+                 "QSPI_CS_B", "", "", "SYSCTLR_GPIO", "SYSCTLR_LED", /* 5 - 9 */
+                 "SYSCTLR_PB", "PMC_ZU4_TRIGGER", "", "EMMC_DAT0", "EMMC_DAT1", /* 10 - 14 */
+                 "EMMC_DAT2", "EMMC_DAT3", "EMMC_DAT4", "EMMC_DAT5", "EMMC_DAT6", /* 15 - 19 */
+                 "EMMC_DAT7", "EMMC_CMD", "EMMC_CLK", "EMMC_RST_B", "", /* 20 - 24 */
+                 "", "", "", "", "", /* 25 - 29 */
+                 "", "", "", "", "LP_I2C0_PMC_SCL", /* 30 - 34 */
+                 "LP_I2C0_PMC_SDA", "LP_I2C1_SCL", "LP_I2C1_SDA", "UART0_RXD_IN", "UART0_TXD_OUT", /* 35 - 39 */
+                 "", "", "ETH_RESET_B", "", "", /* 40 - 44 */
+                 "", "", "", "", "", /* 45 - 49 */
+                 "", "", "USB0_CLK", "USB0_DIR", "USB0_DATA2", /* 50 - 54 */
+                 "USB0_NXT", "USB0_DATA0", "USB0_DATA1", "USB0_STP", "USB0_DATA3", /* 55 - 59 */
+                 "USB0_DATA4", "USB0_DATA5", "USB0_DATA6", "USB0_DATA7", "", /* 60 - 64 */
+                 "", "", "", "", "", /* 65 - 69 */
+                 "", "", "", "", "", /* 70 - 74 */
+                 "", "ETH_MDC", "ETH_MDIO", /* 75 - 77, MIO end and EMIO start */
+                 "SYSCTLR_VERSAL_MODE0", "SYSCTLR_VERSAL_MODE1", /* 78 - 79 */
+                 "SYSCTLR_VERSAL_MODE2", "SYSCTLR_VERSAL_MODE3", "SYSCTLR_POR_B_LS", "", "", /* 80 - 84 */
+                 "SYSCTLR_JTAG_S0", "SYSCTLR_JTAG_S1", "SYSCTLR_IIC_MUX0_RESET_B", "SYSCTLR_IIC_MUX1_RESET_B", "", /* 85 - 89 */
+                 "SYSCTLR_GPIO0", "SYSCTLR_GPIO1", "SYSCTLR_GPIO2", "SYSCTLR_GPIO3", "SYSCTLR_GPIO4", /* 90 - 94 */
+                 "SYSCTLR_GPIO5", "", "", "", "", /* 95 - 99 */
+                 "", "", "", "", "", /* 100 - 104 */
+                 "", "", "", "", "", /* 105 - 109 */
+                 "", "", "", "", "", /* 110 - 114 */
+                 "", "", "", "", "", /* 115 - 119 */
+                 "", "", "", "", "", /* 120 - 124 */
+                 "", "", "", "", "", /* 125 - 129 */
+                 "", "", "", "", "", /* 130 - 134 */
+                 "", "", "", "", "", /* 135 - 139 */
+                 "", "", "", "", "", /* 140 - 144 */
+                 "", "", "", "", "", /* 145 - 149 */
+                 "", "", "", "", "", /* 150 - 154 */
+                 "", "", "", "", "", /* 155 - 159 */
+                 "", "", "", "", "", /* 160 - 164 */
+                 "", "", "", "", "", /* 165 - 169 */
+                 "", "", "", ""; /* 170 - 173 */
+};
+
+&i2c0 { /* MIO 34-35 - can't stay here */
+       status = "okay";
+       clock-frequency = <400000>;
+       pinctrl-names = "default", "gpio";
+       pinctrl-0 = <&pinctrl_i2c0_default>;
+       pinctrl-1 = <&pinctrl_i2c0_gpio>;
+       scl-gpios = <&gpio 34 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&gpio 35 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+       tca6416_u233: gpio@20 { /* u233 */ /* FIXME - address maybe wrong */
+               compatible = "ti,tca6416";
+               reg = <0x20>;
+               gpio-controller; /* interrupt not connected */
+               #gpio-cells = <2>;
+               gpio-line-names = "MAX6643_OT_B", "MAX6643_FANFAIL_B", "QSFPDD1_MODSELL", "QSFPDD1_MODSELL", /* 0 - 3 */
+                                 "PMBUS2_INA226_ALERT", "", "", "MAX6643_FULL_SPEED", /* 4 - 7 */
+                                 "FMCP1_FMC_PRSNT_M2C_B", "", "FMCP1_FMCP_PRSNT_M2C_B", "", /* 10 - 13 */
+                                 "VCCINT_VRHOT_B", "8A34001_EXP_RST_B", "PMBUS_ALERT", "PMBUS1_INA226_ALERT"; /* 14 - 17 */
+       };
+
+       i2c-mux@74 { /* u33 */
+               compatible = "nxp,pca9548";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x74>;
+               /* reset-gpios = <&gpio SYSCTLR_IIC_MUX0_RESET_B GPIO_ACTIVE_HIGH>; */
+               pmbus_i2c: i2c@0 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <0>;
+                       /* On connector J325 */
+                       ir38060_41: regulator@41 { /* IR38060 - u259 */
+                               compatible = "infineon,ir38060", "infineon,ir38064";
+                               reg = <0x41>; /* i2c addr 0x11 */
+                       };
+                       ir38164_43: regulator@43 { /* IR38164 - u13 */
+                               compatible = "infineon,ir38164";
+                               reg = <0x43>; /* i2c addr 0x13 */
+                       };
+                       ir35221_45: pmic@46 { /* IR35221 - u152 */
+                               compatible = "infineon,ir35221";
+                               reg = <0x46>; /* PMBUS - 0x16 */
+                       };
+                       irps5401_47: pmic5401@47 { /* IRPS5401 - u160 */
+                               compatible = "infineon,irps5401";
+                               reg = <0x47>; /* i2c addr 0x17 */
+                       };
+                       ir38164_49: regulator@49 { /* IR38164 - u189 */
+                               compatible = "infineon,ir38164";
+                               reg = <0x49>; /* i2c addr 0x19 */
+                       };
+                       irps5401_4c: pmic@4c { /* IRPS5401 - u167 */
+                               compatible = "infineon,irps5401";
+                               reg = <0x4c>; /* i2c addr 0x1c */
+                       };
+                       irps5401_4d: pmic@4d { /* IRPS5401 - u175 */
+                               compatible = "infineon,irps5401";
+                               reg = <0x4d>; /* i2c addr 0x1c */
+                       };
+                       ir38164_4e: regulator@4e { /* IR38164 - u184 */
+                               compatible = "infineon,ir38164";
+                               reg = <0x4e>; /* i2c addr 0x1e */
+                       };
+                       ir38164_4f: regulator@4f { /* IR38164 - u187 */
+                               compatible = "infineon,ir38164";
+                               reg = <0x4f>; /* i2c addr 0x1f */
+                       };
+               };
+               pmbus1_ina226_i2c: i2c@1 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <1>;
+                       /* FIXME check alerts coming to SC */
+                       vccint: ina226@40 { /* u65 */
+                               compatible = "ti,ina226";
+                               reg = <0x40>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc_soc: ina226@41 { /* u161 */
+                               compatible = "ti,ina226";
+                               reg = <0x41>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc_pmc: ina226@42 { /* u163 */
+                               compatible = "ti,ina226";
+                               reg = <0x42>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc_ram: ina226@43 { /* u5 */
+                               compatible = "ti,ina226";
+                               reg = <0x43>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc_pslp: ina226@44 { /* u165 */
+                               compatible = "ti,ina226";
+                               reg = <0x44>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc_psfp: ina226@45 { /* u164 */
+                               compatible = "ti,ina226";
+                               reg = <0x45>;
+                               shunt-resistor = <5000>;
+                       };
+               };
+               i2c@2 { /* NC */ /* FIXME maybe remove */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <2>;
+               };
+               pmbus2_ina226_i2c: i2c@3 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <3>;
+                       /* FIXME check alerts coming to SC */
+                       vccaux: ina226@40 { /* u166 */
+                               compatible = "ti,ina226";
+                               reg = <0x40>;
+                               shunt-resistor = <5000>;
+                       };
+                       vccaux_pmc: ina226@41 { /* u168 */
+                               compatible = "ti,ina226";
+                               reg = <0x41>;
+                               shunt-resistor = <5000>;
+                       };
+                       mgtavcc: ina226@42 { /* u265 */
+                               compatible = "ti,ina226";
+                               reg = <0x42>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc1v5: ina226@43 { /* u264 */
+                               compatible = "ti,ina226";
+                               reg = <0x43>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcco_mio: ina226@45 { /* u172 */
+                               compatible = "ti,ina226";
+                               reg = <0x45>;
+                               shunt-resistor = <5000>;
+                       };
+                       mgtavtt: ina226@46 { /* u188 */
+                               compatible = "ti,ina226";
+                               reg = <0x46>;
+                               shunt-resistor = <2000>;
+                       };
+                       vcco_502: ina226@47 { /* u174 */
+                               compatible = "ti,ina226";
+                               reg = <0x47>;
+                               shunt-resistor = <5000>;
+                       };
+                       mgtvccaux: ina226@48 { /* u176 */
+                               compatible = "ti,ina226";
+                               reg = <0x48>;
+                               shunt-resistor = <5000>;
+                       };
+                       vcc1v1_lp4: ina226@49 { /* u186 */
+                               compatible = "ti,ina226";
+                               reg = <0x49>;
+                               shunt-resistor = <2000>;
+                       };
+                       vadj_fmc: ina226@4a { /* u184 */
+                               compatible = "ti,ina226";
+                               reg = <0x4a>;
+                               shunt-resistor = <2000>;
+                       };
+                       lpdmgtyavcc: ina226@4b { /* u177 */
+                               compatible = "ti,ina226";
+                               reg = <0x4b>;
+                               shunt-resistor = <5000>;
+                       };
+                       lpdmgtyavtt: ina226@4c { /* u260 */
+                               compatible = "ti,ina226";
+                               reg = <0x4c>;
+                               shunt-resistor = <2000>;
+                       };
+                       lpdmgtyvccaux: ina226@4d { /* u234 */
+                               compatible = "ti,ina226";
+                               reg = <0x4d>;
+                               shunt-resistor = <5000>;
+                       };
+               };
+               i2c@4 { /* NC */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <4>;
+               };
+               i2c@5 { /* NC */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <5>;
+               };
+               user_si570: i2c@6 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <6>;
+                       user_si570_1: clock-generator@5f { /* USER C0 SI570 - u205 */
+                               #clock-cells = <0>;
+                               compatible = "silabs,si570";
+                               reg = <0x5f>;
+                               temperature-stability = <50>;
+                               factory-fout = <100000000>;
+                               clock-frequency = <100000000>;
+                               clock-output-names = "fmc_si570";
+                       };
+
+               };
+               /* 7 unused */
+       };
+};
+
+&i2c1 { /* i2c1 MIO 36-37 */
+       status = "okay";
+       clock-frequency = <400000>;
+       pinctrl-names = "default", "gpio";
+       pinctrl-0 = <&pinctrl_i2c1_default>;
+       pinctrl-1 = <&pinctrl_i2c1_gpio>;
+       scl-gpios = <&gpio 36 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&gpio 37 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+       i2c-mux@74 { /* u35 */
+               compatible = "nxp,pca9548";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0x74>;
+               /* reset-gpios = <&gpio SYSCTLR_IIC_MUX1_RESET_B GPIO_ACTIVE_HIGH>; */
+               ref_clk_i2c: i2c@0 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <0>;
+                       /* Use for storing information about SC board */
+                       eeprom: eeprom@54 { /* u34 - m24128 16kB */
+                               compatible = "st,24c128", "atmel,24c128";
+                               reg = <0x54>; /* & 0x5c */
+                       };
+                       ref_clk: clock-generator@5d { /* u32 */
+                               #clock-cells = <0>;
+                               compatible = "silabs,si570";
+                               reg = <0x5d>;
+                               temperature-stability = <50>;
+                               factory-fout = <33333333>;
+                               clock-frequency = <33333333>;
+                               clock-output-names = "ref_clk";
+                               silabs,skip-recall;
+                       };
+               };
+               fmcp1_i2c: i2c@1 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <1>;
+                       /* FIXME connection to Samtec J51C */
+                       /* expected eeprom 0x50 SE cards */
+               };
+               i2c@2 { /* NC - FIXME */
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <2>;
+               };
+               lpddr4_si570_clk3_i2c: i2c@3 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <3>;
+                       lpddr4_clk3: clock-generator@60 { /* u4 */
+                               #clock-cells = <0>;
+                               compatible = "silabs,si570";
+                               reg = <0x60>;
+                               temperature-stability = <50>;
+                               factory-fout = <200000000>;
+                               clock-frequency = <200000000>;
+                               clock-output-names = "lpddr4_clk3";
+                       };
+               };
+               lpddr4_si570_clk2_i2c: i2c@4 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <4>;
+                       lpddr4_clk2: clock-generator@60 { /* u3 */
+                               #clock-cells = <0>;
+                               compatible = "silabs,si570";
+                               reg = <0x60>;
+                               temperature-stability = <50>;
+                               factory-fout = <200000000>;
+                               clock-frequency = <200000000>;
+                               clock-output-names = "lpddr4_clk2";
+                       };
+               };
+               lpddr4_si570_clk1_i2c: i2c@5 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <5>;
+                       lpddr4_clk1: clock-generator@60 { /* u248 */
+                               #clock-cells = <0>;
+                               compatible = "silabs,si570";
+                               reg = <0x60>;
+                               temperature-stability = <50>;
+                               factory-fout = <200000000>;
+                               clock-frequency = <200000000>;
+                               clock-output-names = "lpddr4_clk1";
+                       };
+               };
+               qsfpdd_i2c: i2c@6 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <6>;
+                       /* J1/J2 connectors */
+               };
+               idt8a34001_i2c: i2c@7 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       reg = <7>;
+                       /* Via J310 connector */
+                       idt_8a34001: phc@5b {
+                               compatible = "idt,8a34001"; /* u219B */
+                               reg = <0x5b>; /* FIXME not in schematics */
+                       };
+               };
+       };
+};
+
+&usb0 { /* MIO52 - MIO63 */
+       status = "okay";
+       phy-names = "usb3-phy";
+       phys = <&psgtr 1 PHY_TYPE_USB3 0 1>;
+};
+
+&psgtr {
+       status = "okay";
+       /* sgmii, usb3 */
+       clocks = <&si5332_1>, <&si5332_2>;
+       clock-names = "ref0", "ref1";
+};
+
+&dwc3_0 {
+       status = "okay";
+       dr_mode = "peripheral";
+       snps,dis_u2_susphy_quirk;
+       snps,dis_u3_susphy_quirk;
+       maximum-speed = "super-speed";
+};
+
+&xilinx_ams {
+       status = "okay";
+};
+
+&ams_ps {
+       status = "okay";
+};
+
+&ams_pl {
+       status = "okay";
+};
+
+&pinctrl0 {
+       status = "okay";
+       pinctrl_i2c0_default: i2c0-default {
+               mux {
+                       groups = "i2c0_8_grp";
+                       function = "i2c0";
+               };
+
+               conf {
+                       groups = "i2c0_8_grp";
+                       bias-pull-up;
+                       slew-rate = <SLEW_RATE_SLOW>;
+                       power-source = <IO_STANDARD_LVCMOS18>;
+               };
+       };
+
+       pinctrl_i2c0_gpio: i2c0-gpio {
+               mux {
+                       groups = "gpio0_34_grp", "gpio0_35_grp";
+                       function = "gpio0";
+               };
+
+               conf {
+                       groups = "gpio0_34_grp", "gpio0_35_grp";
+                       slew-rate = <SLEW_RATE_SLOW>;
+                       power-source = <IO_STANDARD_LVCMOS18>;
+               };
+       };
+
+       pinctrl_i2c1_default: i2c1-default {
+               mux {
+                       groups = "i2c1_9_grp";
+                       function = "i2c1";
+               };
+
+               conf {
+                       groups = "i2c1_9_grp";
+                       bias-pull-up;
+                       slew-rate = <SLEW_RATE_SLOW>;
+                       power-source = <IO_STANDARD_LVCMOS18>;
+               };
+       };
+
+       pinctrl_i2c1_gpio: i2c1-gpio {
+               mux {
+                       groups = "gpio0_36_grp", "gpio0_37_grp";
+                       function = "gpio0";
+               };
+
+               conf {
+                       groups = "gpio0_36_grp", "gpio0_37_grp";
+                       slew-rate = <SLEW_RATE_SLOW>;
+                       power-source = <IO_STANDARD_LVCMOS18>;
+               };
+       };
+};