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 --- arch/arm/dts/Makefile | 3 +- arch/arm/dts/da850-lego-ev3.dts | 89 +++++++++++++++++++++++++++++++++ board/lego/ev3/README | 3 ++ board/lego/ev3/legoev3.c | 22 -------- configs/legoev3_defconfig | 9 +++- include/configs/legoev3.h | 3 -- 6 files changed, 102 insertions(+), 27 deletions(-) create mode 100644 arch/arm/dts/da850-lego-ev3.dts
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile index 31ef2b66a3..fcbfc2a912 100644 --- a/arch/arm/dts/Makefile +++ b/arch/arm/dts/Makefile @@ -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 \ diff --git a/arch/arm/dts/da850-lego-ev3.dts b/arch/arm/dts/da850-lego-ev3.dts new file mode 100644 index 0000000000..e281d039fd --- /dev/null +++ b/arch/arm/dts/da850-lego-ev3.dts @@ -0,0 +1,89 @@ +/* + * 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>; + }; + }; +}; diff --git a/board/lego/ev3/README b/board/lego/ev3/README index da62a649ba..9ad93e8205 100644 --- a/board/lego/ev3/README +++ b/board/lego/ev3/README @@ -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! diff --git a/board/lego/ev3/legoev3.c b/board/lego/ev3/legoev3.c index 423c2fa44b..fa099e95f5 100644 --- a/board/lego/ev3/legoev3.c +++ b/board/lego/ev3/legoev3.c @@ -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), diff --git a/configs/legoev3_defconfig b/configs/legoev3_defconfig index 32cd52c13e..78cca8eb56 100644 --- a/configs/legoev3_defconfig +++ b/configs/legoev3_defconfig @@ -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 diff --git a/include/configs/legoev3.h b/include/configs/legoev3.h index 36ca3b201e..c97e6a0ebb 100644 --- a/include/configs/legoev3.h +++ b/include/configs/legoev3.h @@ -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)
/*