mirror of
https://github.com/torvalds/linux.git
synced 2026-05-12 16:18:45 +02:00
bb70589b67
Add a ramp delay of 60 uV/us to the vqmmc_sdhi0 voltage regulator to
fix UHS-I SD card detection failures.
Measurements on CN78 pin 4 showed the actual voltage ramp time to be
21.86ms when switching between 3.3V and 1.8V. A 25ms ramp delay has
been configured to provide adequate margin. The calculation is based
on the voltage delta of 1.5V (3.3V - 1.8V):
1500000 uV / 60 uV/us = 25000 us (25ms)
Prior to this patch, UHS-I cards failed to initialize with:
mmc0: error -110 whilst initialising SD card
After this patch, UHS-I cards are properly detected on SD0:
mmc0: new UHS-I speed SDR104 SDXC card at address aaaa
mmcblk0: mmc0:aaaa SR64G 59.5 GiB
Fixes: d065453e5e ("arm64: dts: renesas: rzt2h-rzn2h-evk: Enable SD card slot")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260123225957.1007089-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
398 lines
8.1 KiB
Plaintext
398 lines
8.1 KiB
Plaintext
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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/*
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* Common Device Tree Source for the RZ/T2H and RZ/N2H EVK boards.
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*
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* Copyright (C) 2025 Renesas Electronics Corp.
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*/
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/leds/common.h>
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#include <dt-bindings/net/mscc-phy-vsc8531.h>
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#include <dt-bindings/net/renesas,r9a09g077-pcs-miic.h>
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#include <dt-bindings/pinctrl/renesas,r9a09g077-pinctrl.h>
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/ {
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aliases {
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ethernet3 = &gmac1;
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ethernet2 = &gmac2;
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i2c0 = &i2c0;
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i2c1 = &i2c1;
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mmc0 = &sdhi0;
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mmc1 = &sdhi1;
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serial0 = &sci0;
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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reg_1p8v: regulator-1p8v {
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compatible = "regulator-fixed";
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regulator-name = "fixed-1.8V";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-boot-on;
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regulator-always-on;
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};
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reg_3p3v: regulator-3p3v {
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compatible = "regulator-fixed";
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regulator-name = "fixed-3.3V";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-boot-on;
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regulator-always-on;
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};
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#if SD0_SD
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vqmmc_sdhi0: regulator-vqmmc-sdhi0 {
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compatible = "regulator-gpio";
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regulator-name = "SDHI0 VqmmC";
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gpios = <&pinctrl RZT2H_GPIO(2, 6) GPIO_ACTIVE_HIGH>;
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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gpios-states = <0>;
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states = <3300000 0>, <1800000 1>;
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regulator-ramp-delay = <60>;
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};
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#endif
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#if SD1_MICRO_SD
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vccq_sdhi1: regulator-vccq-sdhi1 {
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compatible = "regulator-gpio";
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regulator-name = "SDHI1 VccQ";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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gpios = <&pinctrl RZT2H_GPIO(8, 6) GPIO_ACTIVE_HIGH>;
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gpios-states = <0>;
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states = <3300000 0>, <1800000 1>;
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};
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#endif
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};
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/*
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* ADC0 AN000 can be connected to a potentiometer on the board or
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* exposed on ADC header.
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*
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* T2H:
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* SW17[1] = ON, SW17[2] = OFF - Potentiometer
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* SW17[1] = OFF, SW17[2] = ON - CN41 header
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* N2H:
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* DSW6[1] = OFF, DSW6[2] = ON - Potentiometer
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* DSW6[1] = ON, DSW6[2] = OFF - CN3 header
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*/
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&adc0 {
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status = "okay";
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channel@0 {
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reg = <0x0>;
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};
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channel@1 {
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reg = <0x1>;
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};
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channel@2 {
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reg = <0x2>;
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};
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channel@3 {
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reg = <0x3>;
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};
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};
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/*
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* ADC1 AN100 can be exposed on ADC header or on mikroBUS connector.
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*
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* T2H:
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* SW18[1] = ON, SW18[2] = OFF - CN42 header
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* SW18[1] = OFF, SW18[2] = ON - mikroBUS
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* N2H:
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* DSW6[3] = ON, DSW6[4] = OFF - CN4 header
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* DSW6[3] = OFF, DSW6[4] = ON - mikroBUS
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*
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* ADC1 AN101 can be exposed on ADC header or on Grove2 connector.
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*
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* T2H:
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* SW18[3] = ON, SW18[4] = OFF - CN42 header
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* SW18[3] = OFF, SW18[4] = ON - Grove2
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* N2H:
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* DSW6[5] = ON, DSW6[6] = OFF - CN4 header
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* DSW6[5] = OFF, DSW6[6] = ON - Grove2
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*
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* ADC1 AN102 can be exposed on ADC header or on Grove2 connector.
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*
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* T2H:
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* SW18[5] = ON, SW18[6] = OFF - CN42 header
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* SW18[5] = OFF, SW18[6] = ON - Grove2
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* N2H:
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* DSW6[7] = ON, DSW6[8] = OFF - CN4 header
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* DSW6[7] = OFF, DSW6[8] = ON - Grove2
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*/
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&adc1 {
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status = "okay";
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channel@0 {
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reg = <0x0>;
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};
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channel@1 {
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reg = <0x1>;
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};
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channel@2 {
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reg = <0x2>;
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};
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channel@3 {
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reg = <0x3>;
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};
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};
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&ehci {
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dr_mode = "otg";
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status = "okay";
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};
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ðss {
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status = "okay";
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renesas,miic-switch-portin = <ETHSS_GMAC0_PORT>;
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};
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&extal_clk {
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clock-frequency = <25000000>;
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};
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&gmac1 {
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pinctrl-0 = <&gmac1_pins>;
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pinctrl-names = "default";
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phy-handle = <&mdio1_phy>;
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phy-mode = "rgmii-id";
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pcs-handle = <&mii_conv3>;
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status = "okay";
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};
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&gmac2 {
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pinctrl-0 = <&gmac2_pins>;
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pinctrl-names = "default";
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phy-handle = <&mdio2_phy>;
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phy-mode = "rgmii-id";
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pcs-handle = <&mii_conv2>;
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status = "okay";
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};
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&hsusb {
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dr_mode = "otg";
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status = "okay";
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};
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&i2c0 {
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eeprom: eeprom@50 {
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compatible = "renesas,r1ex24016", "atmel,24c16";
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reg = <0x50>;
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pagesize = <16>;
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};
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};
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&mdio1 {
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mdio1_phy: ethernet-phy@3 {
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compatible = "ethernet-phy-id0007.0772", "ethernet-phy-ieee802.3-c22";
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reg = <3>;
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vsc8531,led-0-mode = <VSC8531_ACTIVITY>;
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vsc8531,led-1-mode = <VSC8531_LINK_ACTIVITY>;
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reset-assert-us = <2000>;
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reset-deassert-us = <15000>;
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};
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};
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&mdio2 {
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mdio2_phy: ethernet-phy@2 {
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compatible = "ethernet-phy-id0007.0772", "ethernet-phy-ieee802.3-c22";
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reg = <2>;
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vsc8531,led-0-mode = <VSC8531_ACTIVITY>;
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vsc8531,led-1-mode = <VSC8531_LINK_ACTIVITY>;
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reset-assert-us = <2000>;
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reset-deassert-us = <15000>;
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};
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};
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&mii_conv0 {
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renesas,miic-input = <ETHSS_ETHSW_PORT0>;
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status = "okay";
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};
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&mii_conv1 {
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renesas,miic-input = <ETHSS_ETHSW_PORT1>;
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status = "okay";
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};
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&mii_conv2 {
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renesas,miic-input = <ETHSS_GMAC2_PORT>;
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status = "okay";
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};
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&mii_conv3 {
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renesas,miic-input = <ETHSS_GMAC1_PORT>;
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status = "okay";
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};
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&ohci {
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dr_mode = "otg";
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status = "okay";
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};
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&pinctrl {
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/*
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* SCI0 Pin Configuration:
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* ------------------------
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* Signal | Pin | RZ/T2H (SW4) | RZ/N2H (DSW9)
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* -----------|---------|--------------|---------------
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* SCI0_RXD | P27_4 | 5: ON, 6: OFF| 1: ON, 2: OFF
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* SCI0_TXD | P27_5 | 7: ON, 8: OFF| 3: ON, 4: OFF
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*/
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sci0_pins: sci0-pins {
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pinmux = <RZT2H_PORT_PINMUX(27, 4, 0x14)>,
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<RZT2H_PORT_PINMUX(27, 5, 0x14)>;
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};
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#if SD0_EMMC
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sdhi0-emmc-iovs-hog {
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gpio-hog;
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gpios = <RZT2H_GPIO(2, 6) GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "SD0_IOVS";
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};
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#endif
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sdhi0_emmc_pins: sd0-emmc-group {
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data-pins {
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pinmux = <RZT2H_PORT_PINMUX(12, 2, 0x29)>, /* SD0_DATA0 */
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<RZT2H_PORT_PINMUX(12, 3, 0x29)>, /* SD0_DATA1 */
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<RZT2H_PORT_PINMUX(12, 4, 0x29)>, /* SD0_DATA2 */
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<RZT2H_PORT_PINMUX(12, 5, 0x29)>, /* SD0_DATA3 */
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<RZT2H_PORT_PINMUX(12, 6, 0x29)>, /* SD0_DATA4 */
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<RZT2H_PORT_PINMUX(12, 7, 0x29)>, /* SD0_DATA5 */
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<RZT2H_PORT_PINMUX(13, 0, 0x29)>, /* SD0_DATA6 */
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<RZT2H_PORT_PINMUX(13, 1, 0x29)>; /* SD0_DATA7 */
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};
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ctrl-pins {
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pinmux = <RZT2H_PORT_PINMUX(12, 0, 0x29)>, /* SD0_CLK */
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<RZT2H_PORT_PINMUX(12, 1, 0x29)>, /* SD0_CMD */
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<RZT2H_PORT_PINMUX(13, 2, 0x29)>; /* SD0_RST# */
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};
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};
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#if SD0_SD
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sdhi0-pwen-hog {
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gpio-hog;
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gpios = <RZT2H_GPIO(2, 5) GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "SD0_PWEN";
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};
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#endif
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sdhi0_sd_pins: sd0-sd-group {
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data-pins {
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pinmux = <RZT2H_PORT_PINMUX(12, 2, 0x29)>, /* SD0_DATA0 */
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<RZT2H_PORT_PINMUX(12, 3, 0x29)>, /* SD0_DATA1 */
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<RZT2H_PORT_PINMUX(12, 4, 0x29)>, /* SD0_DATA2 */
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<RZT2H_PORT_PINMUX(12, 5, 0x29)>; /* SD0_DATA3 */
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};
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ctrl-pins {
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pinmux = <RZT2H_PORT_PINMUX(12, 0, 0x29)>, /* SD0_CLK */
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<RZT2H_PORT_PINMUX(12, 1, 0x29)>, /* SD0_CMD */
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<RZT2H_PORT_PINMUX(22, 5, 0x29)>; /* SD0_CD */
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};
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};
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#if SD1_MICRO_SD
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sdhi1-pwen-hog {
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gpio-hog;
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gpios = <RZT2H_GPIO(8, 5) GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "SD1_PWEN";
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};
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#endif
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sdhi1_pins: sd1-group {
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data-pins {
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pinmux = <RZT2H_PORT_PINMUX(16, 7, 0x29)>, /* SD1_DATA0 */
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<RZT2H_PORT_PINMUX(17, 0, 0x29)>, /* SD1_DATA1 */
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<RZT2H_PORT_PINMUX(17, 1, 0x29)>, /* SD1_DATA2 */
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<RZT2H_PORT_PINMUX(17, 2, 0x29)>; /* SD1_DATA3 */
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};
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ctrl-pins {
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pinmux = <RZT2H_PORT_PINMUX(16, 5, 0x29)>, /* SD1_CLK */
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<RZT2H_PORT_PINMUX(16, 6, 0x29)>, /* SD1_CMD */
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<RZT2H_PORT_PINMUX(17, 4, 0x29)>; /* SD1_CD */
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};
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};
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};
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&sci0 {
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pinctrl-0 = <&sci0_pins>;
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pinctrl-names = "default";
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status = "okay";
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};
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#if SD0_EMMC
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&sdhi0 {
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pinctrl-0 = <&sdhi0_emmc_pins>;
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pinctrl-1 = <&sdhi0_emmc_pins>;
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pinctrl-names = "default", "state_uhs";
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vmmc-supply = <®_3p3v>;
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vqmmc-supply = <®_1p8v>;
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bus-width = <8>;
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non-removable;
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mmc-hs200-1_8v;
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fixed-emmc-driver-type = <1>;
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status = "okay";
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};
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#endif
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#if SD0_SD
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&sdhi0 {
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pinctrl-0 = <&sdhi0_sd_pins>;
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pinctrl-1 = <&sdhi0_sd_pins>;
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pinctrl-names = "default", "state_uhs";
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vmmc-supply = <®_3p3v>;
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vqmmc-supply = <&vqmmc_sdhi0>;
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wp-gpios = <&pinctrl RZT2H_GPIO(22, 6) GPIO_ACTIVE_HIGH>;
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bus-width = <4>;
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sd-uhs-sdr50;
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sd-uhs-sdr104;
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status = "okay";
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};
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#endif
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#if SD1_MICRO_SD
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&sdhi1 {
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pinctrl-0 = <&sdhi1_pins>;
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pinctrl-1 = <&sdhi1_pins>;
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pinctrl-names = "default", "state_uhs";
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vmmc-supply = <®_3p3v>;
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vqmmc-supply = <&vccq_sdhi1>;
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bus-width = <4>;
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sd-uhs-sdr50;
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sd-uhs-sdr104;
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status = "okay";
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};
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#endif
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&usb2_phy {
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pinctrl-0 = <&usb_pins>;
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pinctrl-names = "default";
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status = "okay";
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};
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&wdt2 {
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status = "okay";
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timeout-sec = <60>;
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};
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