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274439b780
The flash chip on the board (Spansion S25FL256SAIF00) is rated to support at least 50MHz for normal read requests according to the datasheet. 133MHz for fast reads. However, ramips seems to be limited to 80MHz. >From testing this, higher values do not improve speeds. time dd if=/dev/mtdblock3 of=/dev/null bs=64k from 42.82s to 14.09s. boot speed is also faster: [ 66.884087] procd: - init - vs [ 48.976049] procd: - init - Since spi speed was requested: [ 3.538884] spi-mt7621 1e000b00.spi: sys_freq: 225000000 CPU is 900MHz: [ 0.000000] CPU Clock: 900MHz Signed-off-by: Rosen Penev <rosenp@gmail.com> [fixed commit message by adding missing 0 in the spi-mt7621 clock output] Signed-off-by: Petr Štetiar <ynezz@true.cz>
136 lines
2.1 KiB
Plaintext
136 lines
2.1 KiB
Plaintext
/dts-v1/;
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#include "mt7621.dtsi"
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/input/input.h>
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/ {
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compatible = "gnubee,gb-pc2", "mediatek,mt7621-soc";
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model = "GB-PC2";
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aliases {
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led-boot = &led_status;
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led-failsafe = &led_status;
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led-running = &led_status;
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led-upgrade = &led_status;
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};
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memory@0 {
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device_type = "memory";
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reg = <0x0 0x1c000000>, <0x20000000 0x4000000>;
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};
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chosen {
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bootargs = "console=ttyS0,57600";
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};
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keys {
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compatible = "gpio-keys-polled";
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poll-interval = <20>;
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reset {
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label = "reset";
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gpios = <&gpio0 18 GPIO_ACTIVE_HIGH>;
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linux,code = <KEY_RESTART>;
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};
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};
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leds {
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compatible = "gpio-leds";
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system {
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label = "gb-pc2:green:system";
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gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
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};
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led_status: status {
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label = "gb-pc2:green:status";
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gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
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};
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lan1 {
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label = "gb-pc2:green:lan1";
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gpios = <&gpio0 24 GPIO_ACTIVE_LOW>;
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};
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lan2 {
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label = "gb-pc2:green:lan2";
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gpios = <&gpio0 25 GPIO_ACTIVE_LOW>;
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};
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lan3-yellow {
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label = "gb-pc2:yellow:lan3";
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gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
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};
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lan3-green {
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label = "gb-pc2:green:lan3";
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gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;
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};
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};
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};
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&sdhci {
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status = "okay";
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};
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&spi0 {
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status = "okay";
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m25p80@0 {
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compatible = "jedec,spi-nor";
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reg = <0>;
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spi-max-frequency = <80000000>;
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m25p,fast-read;
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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label = "u-boot";
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reg = <0x0 0x30000>;
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read-only;
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};
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partition@30000 {
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label = "u-boot-env";
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reg = <0x30000 0x10000>;
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read-only;
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};
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factory: partition@40000 {
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label = "factory";
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reg = <0x40000 0x10000>;
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read-only;
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};
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partition@50000 {
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compatible = "denx,uimage";
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label = "firmware";
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reg = <0x50000 0x1fb0000>;
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};
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};
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};
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};
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&pcie {
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status = "okay";
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};
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ðernet {
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mtd-mac-address = <&factory 0xe000>;
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};
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&pinctrl {
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state_default: pinctrl0 {
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gpio {
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ralink,group = "jtag", "rgmii2", "uart3", "wdt";
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ralink,function = "gpio";
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};
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};
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};
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