Signed-off-by: Tom Warren <twarren@nvidia.com>master
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/*
|
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* (C) Copyright 2010,2011 |
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* NVIDIA Corporation <www.nvidia.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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|
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#include <common.h> |
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#include <asm/io.h> |
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#include <asm/arch/tegra2.h> |
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|
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/*
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* Routine: gpio_config_uart |
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* Description: Does nothing on Harmony - no conflict w/SPI. |
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*/ |
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void gpio_config_uart(void) |
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{ |
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} |
@ -0,0 +1,52 @@ |
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/*
|
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* (C) Copyright 2010,2011 |
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* NVIDIA Corporation <www.nvidia.com> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <common.h> |
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#include <asm/io.h> |
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#include <asm/arch/tegra2.h> |
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#include <asm/arch/gpio.h> |
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/*
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* Routine: gpio_config_uart |
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* Description: Force GPIO_PI3 low on Seaboard so UART4 works. |
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*/ |
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void gpio_config_uart(void) |
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{ |
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int gp = GPIO_PI3; |
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struct gpio_ctlr *gpio = (struct gpio_ctlr *)NV_PA_GPIO_BASE; |
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struct gpio_ctlr_bank *bank = &gpio->gpio_bank[GPIO_BANK(gp)]; |
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u32 val; |
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/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */ |
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val = readl(&bank->gpio_config[GPIO_PORT(gp)]); |
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val |= 1 << GPIO_BIT(gp); |
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writel(val, &bank->gpio_config[GPIO_PORT(gp)]); |
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val = readl(&bank->gpio_out[GPIO_PORT(gp)]); |
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val &= ~(1 << GPIO_BIT(gp)); |
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writel(val, &bank->gpio_out[GPIO_PORT(gp)]); |
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val = readl(&bank->gpio_dir_out[GPIO_PORT(gp)]); |
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val |= 1 << GPIO_BIT(gp); |
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writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]); |
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} |
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