[U-Boot] [PATCH 0/3] Fix hang when loading U-Boot from SPI or NAND

[Tom Warren]

This series of patches fixes a hang seen when loading U-Boot from SPI
or NAND on Seaboard and Harmony due to a missing PLLX init. It also
corrects a UARTD bit error in clk_rst.h, and adds rudimentary GPIO
support so that the UART on Seaboard can be used by U-Boot (UARTD &
SPIFLASH are muxed, and the default POR setting is for SPI access, so
GPIO_PI3 has to be driven low to enable serial console I/O over UARTD).
Harmony has no SPIFLASH, so the issue doesn't exist there.

With these changes, I can write U-Boot to SPI on Seaboard and boot with
it to the U-Boot cmd prompt. This should also apply to loading from NAND
on Seaboard and Harmony - testing to follow.

Tom Warren (3):
  arm: Tegra2: Add missing PLLX init
  arm: Tegra2: GPIO: Add basic GPIO functionality
  arm: Tegra2: Move clk/mux init to board_early_init_f, add GPIO init

 arch/arm/cpu/armv7/tegra2/ap20.c           |   29 ++++++++++++++
 arch/arm/include/asm/arch-tegra2/clk_rst.h |    6 ++-
 arch/arm/include/asm/arch-tegra2/gpio.h    |   59 ++++++++++++++++++++++++++++
 arch/arm/include/asm/arch-tegra2/tegra2.h  |    1 +
 board/nvidia/common/board.c                |   32 ++++++++++-----
 board/nvidia/common/board.h                |    4 ++
 board/nvidia/harmony/Makefile              |    1 +
 board/nvidia/harmony/harmony.c             |   34 ++++++++++++++++
 board/nvidia/seaboard/Makefile             |    1 +
 board/nvidia/seaboard/seaboard.c           |   52 ++++++++++++++++++++++++
 10 files changed, 206 insertions(+), 13 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-tegra2/gpio.h
 create mode 100644 board/nvidia/harmony/harmony.c
 create mode 100644 board/nvidia/seaboard/seaboard.c

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1.7.4.3