mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-26 12:59:43 +09:00
fe3eb7a887
CREG GPIO is a driver for weird soc-specific output ports, which are
controlled by some fields in memory mapped register.
Example:
31 9 7 5 0 < bit number
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[ not used | gpio-1 | gpio-0 | <-shift-> ] < 32 bit register
^ ^
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write 0x2 == set output to "1" (activate)
write 0x3 == set output to "0" (deactivate)
As of tooday we only support fixed (hardcoded) bit per gpio line,
activate / deactivatei and shift values. Fix that by read them from
device tree to be able to use this driver for other boards.
Remove "hsdk" prefix from compatible string as this driver can be
used with different boards like HSDK, AXS101, AXS103, etc.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
117 lines
2.8 KiB
Plaintext
117 lines
2.8 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Synopsys, Inc. All rights reserved.
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*/
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/dts-v1/;
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#include "skeleton.dtsi"
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#include "dt-bindings/clock/snps,hsdk-cgu.h"
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/ {
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#address-cells = <1>;
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#size-cells = <1>;
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aliases {
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console = &uart0;
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spi0 = &spi0;
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};
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cpu_card {
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core_clk: core_clk {
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#clock-cells = <0>;
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compatible = "fixed-clock";
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clock-frequency = <1000000000>;
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u-boot,dm-pre-reloc;
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};
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};
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clk-fmeas {
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clocks = <&cgu_clk CLK_ARC_PLL>, <&cgu_clk CLK_SYS_PLL>,
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<&cgu_clk CLK_TUN_PLL>, <&cgu_clk CLK_DDR_PLL>,
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<&cgu_clk CLK_ARC>, <&cgu_clk CLK_HDMI_PLL>,
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<&cgu_clk CLK_TUN_TUN>, <&cgu_clk CLK_HDMI>,
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<&cgu_clk CLK_SYS_APB>, <&cgu_clk CLK_SYS_AXI>,
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<&cgu_clk CLK_SYS_ETH>, <&cgu_clk CLK_SYS_USB>,
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<&cgu_clk CLK_SYS_SDIO>, <&cgu_clk CLK_SYS_HDMI>,
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<&cgu_clk CLK_SYS_GFX_CORE>, <&cgu_clk CLK_SYS_GFX_DMA>,
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<&cgu_clk CLK_SYS_GFX_CFG>, <&cgu_clk CLK_SYS_DMAC_CORE>,
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<&cgu_clk CLK_SYS_DMAC_CFG>, <&cgu_clk CLK_SYS_SDIO_REF>,
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<&cgu_clk CLK_SYS_SPI_REF>, <&cgu_clk CLK_SYS_I2C_REF>,
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<&cgu_clk CLK_SYS_UART_REF>, <&cgu_clk CLK_SYS_EBI_REF>,
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<&cgu_clk CLK_TUN_ROM>, <&cgu_clk CLK_TUN_PWM>;
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clock-names = "cpu-pll", "sys-pll",
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"tun-pll", "ddr-clk",
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"cpu-clk", "hdmi-pll",
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"tun-clk", "hdmi-clk",
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"apb-clk", "axi-clk",
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"eth-clk", "usb-clk",
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"sdio-clk", "hdmi-sys-clk",
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"gfx-core-clk", "gfx-dma-clk",
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"gfx-cfg-clk", "dmac-core-clk",
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"dmac-cfg-clk", "sdio-ref-clk",
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"spi-clk", "i2c-clk",
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"uart-clk", "ebi-clk",
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"rom-clk", "pwm-clk";
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};
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cgu_clk: cgu-clk@f0000000 {
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compatible = "snps,hsdk-cgu-clock";
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reg = <0xf0000000 0x10>, <0xf00014B8 0x4>;
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#clock-cells = <1>;
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};
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uart0: serial0@f0005000 {
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compatible = "snps,dw-apb-uart";
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reg = <0xf0005000 0x1000>;
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reg-shift = <2>;
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reg-io-width = <4>;
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};
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ethernet@f0008000 {
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#interrupt-cells = <1>;
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compatible = "altr,socfpga-stmmac";
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reg = <0xf0008000 0x2000>;
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phy-mode = "gmii";
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};
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ehci@0xf0040000 {
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compatible = "generic-ehci";
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reg = <0xf0040000 0x100>;
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};
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ohci@0xf0060000 {
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compatible = "generic-ohci";
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reg = <0xf0060000 0x100>;
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};
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spi0: spi@f0020000 {
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compatible = "snps,dw-apb-ssi";
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reg = <0xf0020000 0x1000>;
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#address-cells = <1>;
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#size-cells = <0>;
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spi-max-frequency = <4000000>;
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clocks = <&cgu_clk CLK_SYS_SPI_REF>;
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clock-names = "spi_clk";
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cs-gpio = <&cs_gpio 0>;
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spi_flash@0 {
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compatible = "spi-flash";
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reg = <0>;
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spi-max-frequency = <4000000>;
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};
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};
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cs_gpio: gpio@f00014b0 {
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compatible = "snps,creg-gpio";
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reg = <0xf00014b0 0x4>;
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gpio-controller;
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#gpio-cells = <1>;
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gpio-bank-name = "hsdk-spi-cs";
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gpio-count = <1>;
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gpio-first-shift = <0>;
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gpio-bit-per-line = <2>;
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gpio-activate-val = <2>;
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gpio-deactivate-val = <3>;
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gpio-default-val = <1>;
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};
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};
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