These series of patch add support for atheros ath79 based SOCs in u-boot, at the present moment it's just available for ar933x chip.

Changes in v5: - Add independent Kconfig - Use SRAM for initial stack - Move DDR initialization into board_early_init_f - Convert DDR tap tunning code to C - Save SOC's version into arch_global_data - remove ar933x_serial_platdata - Import document "qca,ar9330-uart.txt" from kernel - Add support for debug UART - remove ar933x_spi_platdata - Import document "spi-ath79.txt" from kernel - Add delay for bitbang operation - Move CONFIG_SYS_TEXT_BASE into ap121.h, and remove config.mk - Remove useless README file - Remove useless checkboard function

Changes in v4: - Use global_data to save CPU/DDR/AHB clock - Use arch_global_data to save SOC's type, revison and id - Auto calculate baudrate for serial driver - Move pinctrl code in serial driver into arch/mips/mach-ath79 - Use get_serial_clock to serial clock source - Use get_bus_freq instead of hardcode in SPI driver

Changes in v3: - Move SoC specific header files into arch/mips/mach-ath79/include/mach - Optimize assembly code - Same code style convertion - Convert serial driver to driver model - Same code style convertion - Convert spi driver to driver model - Same code style convertion - Add support for device tree

Changes in v2: - Move all SoC specific header files into arch/mips/include/asm/arch-ath79 - Check SOC type and extract common code into arch/mips/mach-ath79 - Move serial driver code into drivers/serial - Add a compatible spi driver - Add a reference board implemention

Wills Wang (5): mips: implement to access the KSEG0/1 memory range in map_physmem mips: add support for QCA/Atheros ath79 SOCs mips: ath79: add serial driver for ar933x SOC mips: ath79: add spi driver mips: ath79: add AP121 reference board

arch/mips/Kconfig | 6 + arch/mips/Makefile | 1 + arch/mips/dts/Makefile | 2 +- arch/mips/dts/ap121.dts | 37 + arch/mips/dts/ar933x.dtsi | 64 ++ arch/mips/include/asm/global_data.h | 6 + arch/mips/include/asm/io.h | 7 +- arch/mips/mach-ath79/Kconfig | 22 + arch/mips/mach-ath79/Makefile | 9 + arch/mips/mach-ath79/ar933x/Makefile | 8 + arch/mips/mach-ath79/ar933x/board.c | 42 + arch/mips/mach-ath79/ar933x/clk.c | 86 ++ arch/mips/mach-ath79/ar933x/ddr.c | 215 ++++ arch/mips/mach-ath79/ar933x/lowlevel_init.S | 286 +++++ arch/mips/mach-ath79/cpu.c | 173 +++ arch/mips/mach-ath79/dram.c | 17 + arch/mips/mach-ath79/include/mach/ar71xx_regs.h | 1136 ++++++++++++++++++++ arch/mips/mach-ath79/include/mach/ath79.h | 143 +++ arch/mips/mach-ath79/include/mach/ddr.h | 14 + arch/mips/mach-ath79/reset.c | 46 + board/ath79/ap121/Kconfig | 9 + board/ath79/ap121/MAINTAINERS | 6 + board/ath79/ap121/Makefile | 8 + board/ath79/ap121/ap121.c | 6 + configs/ap121_defconfig | 40 + .../serial/qca,ar9330-uart.txt | 24 + doc/device-tree-bindings/spi/spi-ath79.txt | 19 + drivers/serial/Kconfig | 17 + drivers/serial/Makefile | 1 + drivers/serial/serial_ar933x.c | 259 +++++ drivers/spi/Kconfig | 8 + drivers/spi/Makefile | 1 + drivers/spi/ath79_spi.c | 210 ++++ include/configs/ap121.h | 86 ++ 34 files changed, 3011 insertions(+), 3 deletions(-) create mode 100644 arch/mips/dts/ap121.dts create mode 100644 arch/mips/dts/ar933x.dtsi create mode 100644 arch/mips/mach-ath79/Kconfig create mode 100644 arch/mips/mach-ath79/Makefile create mode 100644 arch/mips/mach-ath79/ar933x/Makefile create mode 100644 arch/mips/mach-ath79/ar933x/board.c create mode 100644 arch/mips/mach-ath79/ar933x/clk.c create mode 100644 arch/mips/mach-ath79/ar933x/ddr.c create mode 100644 arch/mips/mach-ath79/ar933x/lowlevel_init.S create mode 100644 arch/mips/mach-ath79/cpu.c create mode 100644 arch/mips/mach-ath79/dram.c create mode 100644 arch/mips/mach-ath79/include/mach/ar71xx_regs.h create mode 100644 arch/mips/mach-ath79/include/mach/ath79.h create mode 100644 arch/mips/mach-ath79/include/mach/ddr.h create mode 100644 arch/mips/mach-ath79/reset.c create mode 100644 board/ath79/ap121/Kconfig create mode 100644 board/ath79/ap121/MAINTAINERS create mode 100644 board/ath79/ap121/Makefile create mode 100644 board/ath79/ap121/ap121.c create mode 100644 configs/ap121_defconfig create mode 100644 doc/device-tree-bindings/serial/qca,ar9330-uart.txt create mode 100644 doc/device-tree-bindings/spi/spi-ath79.txt create mode 100644 drivers/serial/serial_ar933x.c create mode 100644 drivers/spi/ath79_spi.c create mode 100644 include/configs/ap121.h