Tegra124 requires the bootloader to perform VPR initialization, otherwise the GPU cannot be used by the system. Since using the GPU without that initialization results in a hang, the GPU DT node is left disabled, and it is the task of the bootloader to enable it after ensuring it is safe to use the GPU. VPR init is already performed since patch df3443dfa449, but the device tree was left untouched. This patch series performs this last step and prepares the GPU intialization code to receive more code for newer chips. Patch 1 of this series moves the GPU initialization code to a more generic place, since newer chips like T210 require extra steps to initialize the GPU (e.g. WPR setup). It also performs VPR initialization at a later time of the bootloader life, so that we can check the status variable right before booting the kernel and patch the DT accordingly. Patch 2 performs the DT patching using the ft_board_setup() hook. Alexandre Courbot (2): ARM: tegra: move VPR configuration to a later stage ARM: tegra: enable GPU DT node when appropriate arch/arm/include/asm/arch-tegra/ap.h | 9 ----- arch/arm/include/asm/arch-tegra/gpu.h | 43 +++++++++++++++++++++++ arch/arm/mach-tegra/Makefile | 2 +- arch/arm/mach-tegra/ap.c | 3 -- arch/arm/mach-tegra/board2.c | 3 ++ arch/arm/mach-tegra/gpu.c | 66 +++++++++++++++++++++++++++++++++++ arch/arm/mach-tegra/vpr.c | 35 ------------------- board/nvidia/jetson-tk1/jetson-tk1.c | 8 +++++ board/nvidia/venice2/venice2.c | 8 +++++ include/configs/jetson-tk1.h | 2 ++ include/configs/tegra124-common.h | 3 ++ include/configs/venice2.h | 2 ++ 12 files changed, 136 insertions(+), 48 deletions(-) create mode 100644 arch/arm/include/asm/arch-tegra/gpu.h create mode 100644 arch/arm/mach-tegra/gpu.c delete mode 100644 arch/arm/mach-tegra/vpr.c -- 2.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
