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author | Stephen Warren <swarren@nvidia.com> | 2016-05-25 14:38:51 -0600 |
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committer | Tom Warren <twarren@nvidia.com> | 2016-05-31 09:54:24 -0700 |
commit | 074a1fdd27953aacb59346c83baaf443335ea04e (patch) | |
tree | 9d550e28392c69fe04334822f9fd602e81c67e92 /include | |
parent | 601800be22a37cc518e023adc8e32ad15f00a2c6 (diff) | |
download | u-boot-imx-074a1fdd27953aacb59346c83baaf443335ea04e.zip u-boot-imx-074a1fdd27953aacb59346c83baaf443335ea04e.tar.gz u-boot-imx-074a1fdd27953aacb59346c83baaf443335ea04e.tar.bz2 |
gpio: add Tegra186 GPIO driver
Tegra186's GPIO controller register layout is significantly different from
previous chips, so add a new driver for it. In fact, there are two
different GPIO controllers in Tegra186 that share a similar register
layout, but very different port mapping. This driver covers both.
The DT binding is already present in the Linux kernel (in linux-next via
the Tegra tree so far).
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org> # v1
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/dt-bindings/gpio/tegra186-gpio.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/dt-bindings/gpio/tegra186-gpio.h b/include/dt-bindings/gpio/tegra186-gpio.h new file mode 100644 index 0000000..7e6fb95 --- /dev/null +++ b/include/dt-bindings/gpio/tegra186-gpio.h @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. + * + * SPDX-License-Identifier: GPL-2.0 + * + * This header provides constants for binding nvidia,tegra186-gpio*. + * + * The first cell in Tegra's GPIO specifier is the GPIO ID. The macros below + * provide names for this. + * + * The second cell contains standard flag values specified in gpio.h. + */ + +#ifndef _DT_BINDINGS_GPIO_TEGRA186_GPIO_H +#define _DT_BINDINGS_GPIO_TEGRA186_GPIO_H + +#include <dt-bindings/gpio/gpio.h> + +/* GPIOs implemented by main GPIO controller */ +#define TEGRA_MAIN_GPIO_PORT_A 0 +#define TEGRA_MAIN_GPIO_PORT_B 1 +#define TEGRA_MAIN_GPIO_PORT_C 2 +#define TEGRA_MAIN_GPIO_PORT_D 3 +#define TEGRA_MAIN_GPIO_PORT_E 4 +#define TEGRA_MAIN_GPIO_PORT_F 5 +#define TEGRA_MAIN_GPIO_PORT_G 6 +#define TEGRA_MAIN_GPIO_PORT_H 7 +#define TEGRA_MAIN_GPIO_PORT_I 8 +#define TEGRA_MAIN_GPIO_PORT_J 9 +#define TEGRA_MAIN_GPIO_PORT_K 10 +#define TEGRA_MAIN_GPIO_PORT_L 11 +#define TEGRA_MAIN_GPIO_PORT_M 12 +#define TEGRA_MAIN_GPIO_PORT_N 13 +#define TEGRA_MAIN_GPIO_PORT_O 14 +#define TEGRA_MAIN_GPIO_PORT_P 15 +#define TEGRA_MAIN_GPIO_PORT_Q 16 +#define TEGRA_MAIN_GPIO_PORT_R 17 +#define TEGRA_MAIN_GPIO_PORT_T 18 +#define TEGRA_MAIN_GPIO_PORT_X 19 +#define TEGRA_MAIN_GPIO_PORT_Y 20 +#define TEGRA_MAIN_GPIO_PORT_BB 21 +#define TEGRA_MAIN_GPIO_PORT_CC 22 + +#define TEGRA_MAIN_GPIO(port, offset) \ + ((TEGRA_MAIN_GPIO_PORT_##port * 8) + offset) + +/* GPIOs implemented by AON GPIO controller */ +#define TEGRA_AON_GPIO_PORT_S 0 +#define TEGRA_AON_GPIO_PORT_U 1 +#define TEGRA_AON_GPIO_PORT_V 2 +#define TEGRA_AON_GPIO_PORT_W 3 +#define TEGRA_AON_GPIO_PORT_Z 4 +#define TEGRA_AON_GPIO_PORT_AA 5 +#define TEGRA_AON_GPIO_PORT_EE 6 +#define TEGRA_AON_GPIO_PORT_FF 7 + +#define TEGRA_AON_GPIO(port, offset) \ + ((TEGRA_AON_GPIO_PORT_##port * 8) + offset) + +#endif |