ARM: legoev3: convert to driver model
This converts LEGO MINDSTORMS EV3 to the driver model. MMC, SERIAL, SPI and SPI_FLASH are converted. The device tree contains only the minimal nodes required by U-Boot since the size of U-Boot is limited to 256K on this device. Signed-off-by: David Lechner <david@lechnology.com>
This commit is contained in:
David Lechner
Tom Rini
parent
fb9a1ffef3
commit
1d259e4d68
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@ -30,7 +30,8 @@ dtb-$(CONFIG_EXYNOS7420) += exynos7420-espresso7420.dtb
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dtb-$(CONFIG_ARCH_DAVINCI) += \
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da850-evm.dtb \
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da850-lcdk.dtb
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da850-lcdk.dtb \
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da850-lego-ev3.dtb
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dtb-$(CONFIG_KIRKWOOD) += \
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kirkwood-atl-sbx81lifkw.dtb \
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@ -0,0 +1,89 @@
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/*
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* Device tree for LEGO MINDSTORMS EV3
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*
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* Copyright (C) 2017 David Lechner <david@lechnology.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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* This is an absolute minimum device tree instead of using the one from Linux
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* because the bootloader on the EV3 is limited to 256k. This saves us >10k.
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*/
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/dts-v1/;
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/ {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "lego,ev3", "ti,da850";
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model = "LEGO MINDSTORMS EV3";
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aliases {
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serial1 = &serial1;
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spi0 = &spi0;
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};
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chosen {
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stdout-path = &serial1;
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};
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memory {
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device_type = "memory";
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reg = <0xc0000000 0x04000000>;
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};
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arm {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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intc: interrupt-controller@fffee000 {
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compatible = "ti,cp-intc";
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interrupt-controller;
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#interrupt-cells = <1>;
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ti,intc-size = <101>;
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reg = <0xfffee000 0x2000>;
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};
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};
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soc@1c00000 {
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compatible = "simple-bus";
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model = "da850";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0x01c00000 0x400000>;
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interrupt-parent = <&intc>;
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mmc0: mmc@40000 {
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compatible = "ti,da830-mmc";
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reg = <0x40000 0x1000>;
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cap-sd-highspeed;
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cap-mmc-highspeed;
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interrupts = <16>;
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max-frequency = <50000000>;
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bus-width = <4>;
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};
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spi0: spi@41000 {
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "ti,da830-spi";
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reg = <0x41000 0x1000>;
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num-cs = <6>;
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ti,davinci-spi-intr-line = <1>;
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interrupts = <20>;
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flash@0 {
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compatible = "micron,n25q128a13", "jedec,spi-nor", "spi-flash";
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reg = <0>;
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spi-max-frequency = <50000000>;
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};
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};
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serial1: serial@10c000 {
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compatible = "ti,da830-uart", "ns16550a";
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reg = <0x10c000 0x100>;
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reg-io-width = <4>;
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reg-shift = <2>;
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interrupts = <53>;
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};
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};
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};
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@ -50,3 +50,6 @@ software or a 3rd party program capable of uploading a firmware file.
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If you are booting from the microSD card, it is enough to just write uboot.bin
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to the flash. If you are not using a microSD card, you will need to create an
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image file using the layout described above.
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IMPORTANT: The EEPROM bootloader only copies 256k, so u-boot.img must not
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exceed that size!
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@ -25,11 +25,6 @@
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#include <asm/mach-types.h>
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#include <asm/setup.h>
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#ifdef CONFIG_MMC_DAVINCI
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#include <mmc.h>
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#include <asm/arch/sdmmc_defs.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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u8 board_rev;
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@ -38,23 +33,6 @@ u8 board_rev;
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#define EEPROM_REV_OFFSET 0x3F00
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#define EEPROM_MAC_OFFSET 0x3F06
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#ifdef CONFIG_MMC_DAVINCI
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static struct davinci_mmc mmc_sd0 = {
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.reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
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.host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */
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.voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
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.version = MMC_CTLR_VERSION_2,
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};
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int board_mmc_init(bd_t *bis)
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{
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mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
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/* Add slot-0 to mmc subsystem */
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return davinci_mmc_init(bis, &mmc_sd0);
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}
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#endif
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const struct pinmux_resource pinmuxes[] = {
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PINMUX_ITEM(spi0_pins_base),
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PINMUX_ITEM(spi0_pins_scs0),
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@ -23,12 +23,19 @@ CONFIG_CMD_SPI=y
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CONFIG_CMD_EXT4=y
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CONFIG_CMD_FAT=y
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CONFIG_CMD_DIAG=y
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CONFIG_OF_CONTROL=y
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CONFIG_DEFAULT_DEVICE_TREE="da850-lego-ev3"
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CONFIG_DM=y
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# CONFIG_DM_DEVICE_REMOVE is not set
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CONFIG_SYS_I2C_DAVINCI=y
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CONFIG_DM_MMC=y
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CONFIG_DM_SPI_FLASH=y
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CONFIG_SPI_FLASH=y
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CONFIG_SF_DEFAULT_SPEED=50000000
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CONFIG_SPI_FLASH_STMICRO=y
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CONFIG_DM_SERIAL=y
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CONFIG_SYS_NS16550=y
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CONFIG_SPI=y
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CONFIG_DM_SPI=y
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CONFIG_DAVINCI_SPI=y
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CONFIG_OF_LIBFDT=y
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# CONFIG_EFI_LOADER is not set
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@ -42,11 +42,8 @@
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* Serial Driver info
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*/
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#define CONFIG_SYS_NS16550_SERIAL
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#define CONFIG_SYS_NS16550_REG_SIZE -4 /* NS16550 register size */
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#define CONFIG_SYS_NS16550_COM1 DAVINCI_UART1_BASE /* Base address of UART1 */
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#define CONFIG_SYS_NS16550_CLK clk_get(DAVINCI_UART2_CLKID)
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#define CONFIG_SYS_SPI_BASE DAVINCI_SPI0_BASE
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#define CONFIG_SYS_SPI_CLK clk_get(DAVINCI_SPI0_CLKID)
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/*
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