ccng to Minkyu
---------- Forwarded message ---------- From: Rajeshwari Birje rajeshwari.birje@gmail.com Date: 18 May 2012 12:16 Subject: Re: [U-Boot] [PATCH 1/2] exynos5: pinmux: Added default pinumx settings To: Rajeshwari Shinde rajeshwari.s@samsung.com Cc: marex@denx.de, k.chander@samsung.com, patches@linaro.org, u-boot@lists.denx.de
Hi All,
Please do let me know if any updates on the this patchset.
On Fri, May 4, 2012 at 12:26 PM, Rajeshwari Shinde rajeshwari.s@samsung.com wrote:
This patch performs the pinmux configuration in a common file. As of now only Exynos5 pinmux for SDMMC, UART and Ethernet is supported.
Signed-off-by: Abhilash Kesavan a.kesavan@samsung.com Signed-off-by: Che-Liang Chiou clchiou@chromium.org Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com
arch/arm/cpu/armv7/exynos/pinmux.c | 189 +++++++++++++++++++++++++++++ arch/arm/include/asm/arch-exynos/pinmux.h | 77 ++++++++++++ 2 files changed, 266 insertions(+), 0 deletions(-) create mode 100644 arch/arm/cpu/armv7/exynos/pinmux.c create mode 100644 arch/arm/include/asm/arch-exynos/pinmux.h
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c new file mode 100644 index 0000000..11f4b71 --- /dev/null +++ b/arch/arm/cpu/armv7/exynos/pinmux.c @@ -0,0 +1,189 @@ +/*
- Copyright (c) 2012 Samsung Electronics.
- Abhilash Kesavan a.kesavan@samsung.com
- See file CREDITS for list of people who contributed to this
- project.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- MA 02111-1307 USA
- */
+#include <common.h> +#include <asm/arch/cpu.h> +#include <asm/arch/gpio.h> +#include <asm/arch/pinmux.h> +#include <asm/arch/sromc.h>
+int exynos5_pinmux_config(int peripheral, int flags) +{
- struct exynos5_gpio_part1 *gpio1 =
- (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1();
- struct s5p_gpio_bank *bank, *bank_ext;
- int i, start, count;
- switch (peripheral) {
- case PERIPH_ID_UART0:
- case PERIPH_ID_UART1:
- case PERIPH_ID_UART2:
- case PERIPH_ID_UART3:
- switch (peripheral) {
- case PERIPH_ID_UART0:
- bank = &gpio1->a0;
- start = 0; count = 4;
- break;
- case PERIPH_ID_UART1:
- bank = &gpio1->a0;
- start = 4; count = 4;
- break;
- case PERIPH_ID_UART2:
- bank = &gpio1->a1;
- start = 0; count = 4;
- break;
- case PERIPH_ID_UART3:
- bank = &gpio1->a1;
- start = 4; count = 2;
- break;
- }
- for (i = start; i < start + count; i++) {
- s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
- s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
- }
- break;
- case PERIPH_ID_SDMMC0:
- case PERIPH_ID_SDMMC1:
- case PERIPH_ID_SDMMC2:
- case PERIPH_ID_SDMMC3:
- switch (peripheral) {
- case PERIPH_ID_SDMMC0:
- bank = &gpio1->c0; bank_ext = &gpio1->c1;
- break;
- case PERIPH_ID_SDMMC1:
- bank = &gpio1->c1; bank_ext = NULL;
- break;
- case PERIPH_ID_SDMMC2:
- bank = &gpio1->c2; bank_ext = &gpio1->c3;
- break;
- case PERIPH_ID_SDMMC3:
- bank = &gpio1->c3; bank_ext = NULL;
- break;
- }
- if ((flags & PINMUX_FLAG_8BIT_MODE) && !bank_ext) {
- debug("SDMMC device %d does not support 8bit mode",
- peripheral);
- return -1;
- }
- if (flags & PINMUX_FLAG_8BIT_MODE) {
- for (i = 3; i <= 6; i++) {
- s5p_gpio_cfg_pin(bank_ext, i, GPIO_FUNC(0x3));
- s5p_gpio_set_pull(bank_ext, i, GPIO_PULL_UP);
- s5p_gpio_set_drv(bank_ext, i, GPIO_DRV_4X);
- }
- }
- for (i = 0; i < 2; i++) {
- s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
- s5p_gpio_set_pull(bank, i, GPIO_PULL_NONE);
- s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
- }
- for (i = 3; i <= 6; i++) {
- s5p_gpio_cfg_pin(bank, i, GPIO_FUNC(0x2));
- s5p_gpio_set_pull(bank, i, GPIO_PULL_UP);
- s5p_gpio_set_drv(bank, i, GPIO_DRV_4X);
- }
- break;
- case PERIPH_ID_SROMC:
- /*
- * SROM:CS1 and EBI
- *
- * GPY0[0] SROM_CSn[0]
- * GPY0[1] SROM_CSn[1](2)
- * GPY0[2] SROM_CSn[2]
- * GPY0[3] SROM_CSn[3]
- * GPY0[4] EBI_OEn(2)
- * GPY0[5] EBI_EEn(2)
- *
- * GPY1[0] EBI_BEn[0](2)
- * GPY1[1] EBI_BEn[1](2)
- * GPY1[2] SROM_WAIT(2)
- * GPY1[3] EBI_DATA_RDn(2)
- */
- s5p_gpio_cfg_pin(&gpio1->y0, (flags & PINMUX_FLAG_BANK),
- GPIO_FUNC(2));
- s5p_gpio_cfg_pin(&gpio1->y0, 4, GPIO_FUNC(2));
- s5p_gpio_cfg_pin(&gpio1->y0, 5, GPIO_FUNC(2));
- for (i = 0; i < 4; i++)
- s5p_gpio_cfg_pin(&gpio1->y1, i, GPIO_FUNC(2));
- /*
- * EBI: 8 Addrss Lines
- *
- * GPY3[0] EBI_ADDR[0](2)
- * GPY3[1] EBI_ADDR[1](2)
- * GPY3[2] EBI_ADDR[2](2)
- * GPY3[3] EBI_ADDR[3](2)
- * GPY3[4] EBI_ADDR[4](2)
- * GPY3[5] EBI_ADDR[5](2)
- * GPY3[6] EBI_ADDR[6](2)
- * GPY3[7] EBI_ADDR[7](2)
- *
- * EBI: 16 Data Lines
- *
- * GPY5[0] EBI_DATA[0](2)
- * GPY5[1] EBI_DATA[1](2)
- * GPY5[2] EBI_DATA[2](2)
- * GPY5[3] EBI_DATA[3](2)
- * GPY5[4] EBI_DATA[4](2)
- * GPY5[5] EBI_DATA[5](2)
- * GPY5[6] EBI_DATA[6](2)
- * GPY5[7] EBI_DATA[7](2)
- *
- * GPY6[0] EBI_DATA[8](2)
- * GPY6[1] EBI_DATA[9](2)
- * GPY6[2] EBI_DATA[10](2)
- * GPY6[3] EBI_DATA[11](2)
- * GPY6[4] EBI_DATA[12](2)
- * GPY6[5] EBI_DATA[13](2)
- * GPY6[6] EBI_DATA[14](2)
- * GPY6[7] EBI_DATA[15](2)
- */
- for (i = 0; i < 8; i++) {
- s5p_gpio_cfg_pin(&gpio1->y3, i, GPIO_FUNC(2));
- s5p_gpio_set_pull(&gpio1->y3, i, GPIO_PULL_UP);
- s5p_gpio_cfg_pin(&gpio1->y5, i, GPIO_FUNC(2));
- s5p_gpio_set_pull(&gpio1->y5, i, GPIO_PULL_UP);
- s5p_gpio_cfg_pin(&gpio1->y6, i, GPIO_FUNC(2));
- s5p_gpio_set_pull(&gpio1->y6, i, GPIO_PULL_UP);
- }
- break;
- default:
- debug("%s: invalid peripheral %d", __func__, peripheral);
- return -1;
- }
- return 0;
+}
+int exynos_pinmux_config(int peripheral, int flags) +{
- if (cpu_is_exynos5())
- return exynos5_pinmux_config(peripheral, flags);
- else{
- debug("pinmux functionality not supported\n");
- return -1;
- }
+} diff --git a/arch/arm/include/asm/arch-exynos/pinmux.h b/arch/arm/include/asm/arch-exynos/pinmux.h new file mode 100644 index 0000000..306f521 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/pinmux.h @@ -0,0 +1,77 @@ +/*
- Copyright (C) 2012 Samsung Electronics
- Abhilash Kesavan a.kesavan@samsung.com
- See file CREDITS for list of people who contributed to this
- project.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- MA 02111-1307 USA
- */
+#ifndef __ASM_ARM_ARCH_PINMUX_H +#define __ASM_ARM_ARCH_PINMUX_H
+/*
- Peripherals requiring clock/pinmux configuration. List will
- grow with support for more devices getting added.
- */
+enum periph_id {
- PERIPH_ID_SDMMC0,
- PERIPH_ID_SDMMC1,
- PERIPH_ID_SDMMC2,
- PERIPH_ID_SDMMC3,
- PERIPH_ID_SDMMC4,
- PERIPH_ID_SROMC,
- PERIPH_ID_UART0,
- PERIPH_ID_UART1,
- PERIPH_ID_UART2,
- PERIPH_ID_UART3,
- PERIPH_ID_COUNT,
- PERIPH_ID_NONE = -1,
+};
+/*
- Flags for setting specific configarations of peripherals.
- List will grow with support for more devices getting added.
- */
+enum {
- PINMUX_FLAG_NONE = 0x00000000,
- /* Flags for eMMC */
- PINMUX_FLAG_8BIT_MODE = 1 << 0, /* SDMMC 8-bit mode */
- /* Flags for SROM controller */
- PINMUX_FLAG_BANK = 3 << 0, /* bank number (0-3) */
- PINMUX_FLAG_16BIT = 1 << 2, /* 16-bit width */
+};
+/**
- Configures the pinmux for a particular peripheral.
- Each gpio can be configured in many different ways (4 bits on exynos)
- such as "input", "output", "special function", "external interrupt"
- etc. This function will configure the peripheral pinmux along with
- pull-up/down and drive strength.
- @param peripheral peripheral to be configured
- @param flags configure flags
- @return 0 if ok, -1 on error (e.g. unsupported peripheral)
- */
+int exynos_pinmux_config(int peripheral, int flags);
+#endif
1.7.4.4
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Regards, Rajeshwari Shinde. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot