Commit 1d259e4d authored by David Lechner's avatar David Lechner Committed by Tom Rini

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: default avatarDavid Lechner <david@lechnology.com>
parent fb9a1ffe
......@@ -30,7 +30,8 @@ dtb-$(CONFIG_EXYNOS7420) += exynos7420-espresso7420.dtb
dtb-$(CONFIG_ARCH_DAVINCI) += \
da850-evm.dtb \
da850-lcdk.dtb
da850-lcdk.dtb \
da850-lego-ev3.dtb
dtb-$(CONFIG_KIRKWOOD) += \
kirkwood-atl-sbx81lifkw.dtb \
......
/*
* Device tree for LEGO MINDSTORMS EV3
*
* Copyright (C) 2017 David Lechner <david@lechnology.com>
*
* SPDX-License-Identifier: GPL-2.0+
*
* This is an absolute minimum device tree instead of using the one from Linux
* because the bootloader on the EV3 is limited to 256k. This saves us >10k.
*/
/dts-v1/;
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "lego,ev3", "ti,da850";
model = "LEGO MINDSTORMS EV3";
aliases {
serial1 = &serial1;
spi0 = &spi0;
};
chosen {
stdout-path = &serial1;
};
memory {
device_type = "memory";
reg = <0xc0000000 0x04000000>;
};
arm {
#address-cells = <1>;
#size-cells = <1>;
ranges;
intc: interrupt-controller@fffee000 {
compatible = "ti,cp-intc";
interrupt-controller;
#interrupt-cells = <1>;
ti,intc-size = <101>;
reg = <0xfffee000 0x2000>;
};
};
soc@1c00000 {
compatible = "simple-bus";
model = "da850";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x01c00000 0x400000>;
interrupt-parent = <&intc>;
mmc0: mmc@40000 {
compatible = "ti,da830-mmc";
reg = <0x40000 0x1000>;
cap-sd-highspeed;
cap-mmc-highspeed;
interrupts = <16>;
max-frequency = <50000000>;
bus-width = <4>;
};
spi0: spi@41000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "ti,da830-spi";
reg = <0x41000 0x1000>;
num-cs = <6>;
ti,davinci-spi-intr-line = <1>;
interrupts = <20>;
flash@0 {
compatible = "micron,n25q128a13", "jedec,spi-nor", "spi-flash";
reg = <0>;
spi-max-frequency = <50000000>;
};
};
serial1: serial@10c000 {
compatible = "ti,da830-uart", "ns16550a";
reg = <0x10c000 0x100>;
reg-io-width = <4>;
reg-shift = <2>;
interrupts = <53>;
};
};
};
......@@ -50,3 +50,6 @@ software or a 3rd party program capable of uploading a firmware file.
If you are booting from the microSD card, it is enough to just write uboot.bin
to the flash. If you are not using a microSD card, you will need to create an
image file using the layout described above.
IMPORTANT: The EEPROM bootloader only copies 256k, so u-boot.img must not
exceed that size!
......@@ -25,11 +25,6 @@
#include <asm/mach-types.h>
#include <asm/setup.h>
#ifdef CONFIG_MMC_DAVINCI
#include <mmc.h>
#include <asm/arch/sdmmc_defs.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
u8 board_rev;
......@@ -38,23 +33,6 @@ u8 board_rev;
#define EEPROM_REV_OFFSET 0x3F00
#define EEPROM_MAC_OFFSET 0x3F06
#ifdef CONFIG_MMC_DAVINCI
static struct davinci_mmc mmc_sd0 = {
.reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
.host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */
.voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
.version = MMC_CTLR_VERSION_2,
};
int board_mmc_init(bd_t *bis)
{
mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
/* Add slot-0 to mmc subsystem */
return davinci_mmc_init(bis, &mmc_sd0);
}
#endif
const struct pinmux_resource pinmuxes[] = {
PINMUX_ITEM(spi0_pins_base),
PINMUX_ITEM(spi0_pins_scs0),
......
......@@ -23,12 +23,19 @@ CONFIG_CMD_SPI=y
CONFIG_CMD_EXT4=y
CONFIG_CMD_FAT=y
CONFIG_CMD_DIAG=y
CONFIG_OF_CONTROL=y
CONFIG_DEFAULT_DEVICE_TREE="da850-lego-ev3"
CONFIG_DM=y
# CONFIG_DM_DEVICE_REMOVE is not set
CONFIG_SYS_I2C_DAVINCI=y
CONFIG_DM_MMC=y
CONFIG_DM_SPI_FLASH=y
CONFIG_SPI_FLASH=y
CONFIG_SF_DEFAULT_SPEED=50000000
CONFIG_SPI_FLASH_STMICRO=y
CONFIG_DM_SERIAL=y
CONFIG_SYS_NS16550=y
CONFIG_SPI=y
CONFIG_DM_SPI=y
CONFIG_DAVINCI_SPI=y
CONFIG_OF_LIBFDT=y
# CONFIG_EFI_LOADER is not set
......@@ -42,11 +42,8 @@
* Serial Driver info
*/
#define CONFIG_SYS_NS16550_SERIAL
#define CONFIG_SYS_NS16550_REG_SIZE -4 /* NS16550 register size */
#define CONFIG_SYS_NS16550_COM1 DAVINCI_UART1_BASE /* Base address of UART1 */
#define CONFIG_SYS_NS16550_CLK clk_get(DAVINCI_UART2_CLKID)
#define CONFIG_SYS_SPI_BASE DAVINCI_SPI0_BASE
#define CONFIG_SYS_SPI_CLK clk_get(DAVINCI_SPI0_CLKID)
/*
......
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