From a38a3c4af4ed72a2ed6192203f8fe17ccdd2389f Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Thu, 9 Jul 2015 16:33:01 +0900 Subject: [PATCH] ARM: tegra: enable GPU DT node when appropriate T124/210 requires some specific configuration (VPR setup) to be performed by the bootloader before the GPU can be used. For this reason, the GPU node in the device tree is disabled by default. This patch enables the node if U-boot has performed VPR configuration. Boards enabled by this patch are T124's Jetson TK1 and Venice2 and T210's P2571. Signed-off-by: Alexandre Courbot Cc: Stephen Warren Cc: Tom Warren Signed-off-by: Tom Warren --- arch/arm/include/asm/arch-tegra/gpu.h | 15 +++++++++++++++ arch/arm/mach-tegra/gpu.c | 19 +++++++++++++++++++ board/nvidia/jetson-tk1/jetson-tk1.c | 8 ++++++++ board/nvidia/p2571/p2571.c | 7 +++++++ board/nvidia/venice2/venice2.c | 8 ++++++++ include/configs/jetson-tk1.h | 2 ++ include/configs/p2571.h | 1 + include/configs/venice2.h | 2 ++ 8 files changed, 62 insertions(+) diff --git a/arch/arm/include/asm/arch-tegra/gpu.h b/arch/arm/include/asm/arch-tegra/gpu.h index b347a21835..52280f40ce 100644 --- a/arch/arm/include/asm/arch-tegra/gpu.h +++ b/arch/arm/include/asm/arch-tegra/gpu.h @@ -25,3 +25,18 @@ static inline bool gpu_configured(void) } #endif /* CONFIG_TEGRA_GPU */ + +#if defined(CONFIG_OF_LIBFDT) + +int gpu_enable_node(void *blob, const char *gpupath); + +#else /* CONFIG_OF_LIBFDT */ + +static inline int gpu_enable_node(void *blob, const char *gpupath) +{ + return 0; +} + +#endif /* CONFIG_OF_LIBFDT */ + +#endif /* __ASM_ARCH_TEGRA_GPU_H */ diff --git a/arch/arm/mach-tegra/gpu.c b/arch/arm/mach-tegra/gpu.c index b2fa50b540..4ea046d3e5 100644 --- a/arch/arm/mach-tegra/gpu.c +++ b/arch/arm/mach-tegra/gpu.c @@ -45,3 +45,22 @@ bool vpr_configured(void) { return _configured; } + +#if defined(CONFIG_OF_LIBFDT) + +int gpu_enable_node(void *blob, const char *gpupath) +{ + int offset; + + if (vpr_configured()) { + offset = fdt_path_offset(blob, gpupath); + if (offset > 0) { + fdt_status_okay(blob, offset); + debug("enabled GPU node %s\n", gpupath); + } + } + + return 0; +} + +#endif diff --git a/board/nvidia/jetson-tk1/jetson-tk1.c b/board/nvidia/jetson-tk1/jetson-tk1.c index 52425a8f6d..3c21767ce4 100644 --- a/board/nvidia/jetson-tk1/jetson-tk1.c +++ b/board/nvidia/jetson-tk1/jetson-tk1.c @@ -11,6 +11,7 @@ #include #include +#include #include "pinmux-config-jetson-tk1.h" @@ -79,3 +80,10 @@ int board_eth_init(bd_t *bis) return pci_eth_init(bis); } #endif /* PCI */ + +int ft_board_setup(void *blob, bd_t *bd) +{ + gpu_enable_node(blob, "/gpu@0,57000000"); + + return 0; +} diff --git a/board/nvidia/p2571/p2571.c b/board/nvidia/p2571/p2571.c index d80a7d0d3e..d33e4d12b2 100644 --- a/board/nvidia/p2571/p2571.c +++ b/board/nvidia/p2571/p2571.c @@ -11,6 +11,7 @@ #include #include #include "max77620_init.h" +#include #include "pinmux-config-p2571.h" void pin_mux_mmc(void) @@ -61,3 +62,9 @@ void start_cpu_fan(void) gpio_request(GPIO_PE4, "FAN_VDD"); gpio_direction_output(GPIO_PE4, 1); } + +int ft_board_setup(void *blob, bd_t *bd) +{ + gpu_enable_node(blob, "/gpu@0,57000000"); + return 0; +} diff --git a/board/nvidia/venice2/venice2.c b/board/nvidia/venice2/venice2.c index c56ef129d6..3e2b9a7745 100644 --- a/board/nvidia/venice2/venice2.c +++ b/board/nvidia/venice2/venice2.c @@ -8,6 +8,7 @@ #include #include #include +#include #include "pinmux-config-venice2.h" /* @@ -27,3 +28,10 @@ void pinmux_init(void) pinmux_config_drvgrp_table(venice2_drvgrps, ARRAY_SIZE(venice2_drvgrps)); } + +int ft_board_setup(void *blob, bd_t *bd) +{ + gpu_enable_node(blob, "/gpu@0,57000000"); + + return 0; +} diff --git a/include/configs/jetson-tk1.h b/include/configs/jetson-tk1.h index 55ef5f8cc6..def0ab4121 100644 --- a/include/configs/jetson-tk1.h +++ b/include/configs/jetson-tk1.h @@ -79,4 +79,6 @@ #define CONFIG_ARMV7_SECURE_BASE 0xfff00000 #define CONFIG_ARMV7_SECURE_RESERVE_SIZE 0x00100000 +#define CONFIG_OF_BOARD_SETUP + #endif /* __CONFIG_H */ diff --git a/include/configs/p2571.h b/include/configs/p2571.h index b22117bfdf..54427ad429 100644 --- a/include/configs/p2571.h +++ b/include/configs/p2571.h @@ -65,5 +65,6 @@ #include "tegra-common-post.h" #define COUNTER_FREQUENCY 38400000 +#define CONFIG_OF_BOARD_SETUP #endif /* _P2571_H */ diff --git a/include/configs/venice2.h b/include/configs/venice2.h index 2c43f3ebed..8b1189e7c4 100644 --- a/include/configs/venice2.h +++ b/include/configs/venice2.h @@ -61,4 +61,6 @@ #include "tegra-common-usb-gadget.h" #include "tegra-common-post.h" +#define CONFIG_OF_BOARD_SETUP + #endif /* __CONFIG_H */ -- 2.39.5