* [PATCH 1/7] add i2c clock support
@ 2012-02-21 0:27 Eric Bénard
2012-02-21 0:27 ` [PATCH 2/7] mfd: add mc34708 driver Eric Bénard
` (5 more replies)
0 siblings, 6 replies; 28+ messages in thread
From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw)
To: barebox
Signed-off-by: Eric Bénard <eric@eukrea.com>
---
arch/arm/mach-imx/speed-imx53.c | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-imx/speed-imx53.c b/arch/arm/mach-imx/speed-imx53.c
index 0d6ac24..a2385fa 100644
--- a/arch/arm/mach-imx/speed-imx53.c
+++ b/arch/arm/mach-imx/speed-imx53.c
@@ -169,6 +169,31 @@ unsigned long imx_get_fecclk(void)
return imx_get_ipgclk();
}
+static unsigned long imx_get_ipg_perclk(void)
+{
+ u32 reg;
+
+ reg = ccm_readl(MX5_CCM_CBCDR);
+ if (!(reg & MX5_CCM_CBCDR_PERIPH_CLK_SEL))
+ return pll2_sw_get_rate();
+ reg = ccm_readl(MX5_CCM_CBCMR);
+ switch ((reg & MX5_CCM_CBCMR_PERIPH_CLK_SEL_MASK) >>
+ MX5_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET) {
+ case 0:
+ return pll1_main_get_rate();
+ case 1:
+ return pll3_sw_get_rate();
+ /* case 2:
+ TODO : LP_APM */
+ }
+ return 0;
+}
+
+unsigned long imx_get_i2cclk(void)
+{
+ return imx_get_ipg_perclk();
+}
+
unsigned long imx_get_mmcclk(void)
{
u32 reg, prediv, podf, rate;
@@ -201,4 +226,5 @@ void imx_dump_clocks(void)
printf("ipg: %ld\n", imx_get_ipgclk());
printf("fec: %ld\n", imx_get_fecclk());
printf("gpt: %ld\n", imx_get_gptclk());
+ printf("i2c: %ld\n", imx_get_i2cclk());
}
--
1.7.7.6
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^ permalink raw reply related [flat|nested] 28+ messages in thread* [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard @ 2012-02-21 0:27 ` Eric Bénard 2012-02-21 3:48 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 0:27 ` [PATCH 3/7] i.MX53: add silicn revision functions Eric Bénard ` (4 subsequent siblings) 5 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw) To: barebox this driver is a copie of the mc13892 one Signed-off-by: Eric Bénard <eric@eukrea.com> --- drivers/mfd/Kconfig | 4 + drivers/mfd/Makefile | 1 + drivers/mfd/mc34708.c | 294 +++++++++++++++++++++++++++++++++++++++++++++++++ include/mfd/mc34708.h | 102 +++++++++++++++++ 4 files changed, 401 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/mc34708.c create mode 100644 include/mfd/mc34708.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 87797de..b080c1c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -8,6 +8,10 @@ config I2C_MC34704 depends on I2C bool "MC34704 PMIC driver" +config I2C_MC34708 + depends on I2C + bool "MC34708 PMIC driver" + config I2C_MC9SDZ60 depends on I2C bool "MC9SDZ60 driver" diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 1171335..bc9e0e8 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_I2C_MC13892) += mc13892.o obj-$(CONFIG_I2C_MC34704) += mc34704.o +obj-$(CONFIG_I2C_MC34708) += mc34708.o obj-$(CONFIG_I2C_MC9SDZ60) += mc9sdz60.o obj-$(CONFIG_I2C_LP3972) += lp3972.o obj-$(CONFIG_I2C_TWLCORE) += twl-core.o diff --git a/drivers/mfd/mc34708.c b/drivers/mfd/mc34708.c new file mode 100644 index 0000000..e7f40c0 --- /dev/null +++ b/drivers/mfd/mc34708.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) 2007 Sascha Hauer, Pengutronix + * 2009 Marc Kleine-Budde <mkl@pengutronix.de> + * + * 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 <init.h> +#include <driver.h> +#include <xfuncs.h> +#include <errno.h> +#include <spi/spi.h> +#include <malloc.h> + +#include <i2c/i2c.h> +#include <mfd/mc34708.h> + +#define DRIVERNAME "mc34708" + +#define to_mc34708(a) container_of(a, struct mc34708, cdev) + +static struct mc34708 *mc_dev; + +struct mc34708 *mc34708_get(void) +{ + if (!mc_dev) + return NULL; + + return mc_dev; +} +EXPORT_SYMBOL(mc34708_get); + +#ifdef CONFIG_SPI +static int spi_rw(struct spi_device *spi, void * buf, size_t len) +{ + int ret; + + struct spi_transfer t = { + .tx_buf = (const void *)buf, + .rx_buf = buf, + .len = len, + .cs_change = 0, + .delay_usecs = 0, + }; + struct spi_message m; + + spi_message_init(&m); + spi_message_add_tail(&t, &m); + + if ((ret = spi_sync(spi, &m))) + return ret; + return 0; +} + +#define MXC_PMIC_REG_NUM(reg) (((reg) & 0x3f) << 25) +#define MXC_PMIC_WRITE (1 << 31) + +static int mc34708_spi_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) +{ + uint32_t buf; + + buf = MXC_PMIC_REG_NUM(reg); + + spi_rw(mc34708->spi, &buf, 4); + + *val = buf; + + return 0; +} + +static int mc34708_spi_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) +{ + uint32_t buf = MXC_PMIC_REG_NUM(reg) | MXC_PMIC_WRITE | (val & 0xffffff); + + spi_rw(mc34708->spi, &buf, 4); + + return 0; +} +#endif + +#ifdef CONFIG_I2C +static int mc34708_i2c_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) +{ + u8 buf[3]; + int ret; + + ret = i2c_read_reg(mc34708->client, reg, buf, 3); + *val = buf[0] << 16 | buf[1] << 8 | buf[2] << 0; + + return ret == 3 ? 0 : ret; +} + +static int mc34708_i2c_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) +{ + u8 buf[] = { + val >> 16, + val >> 8, + val >> 0, + }; + int ret; + + ret = i2c_write_reg(mc34708->client, reg, buf, 3); + + return ret == 3 ? 0 : ret; +} +#endif + +int mc34708_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) +{ +#ifdef CONFIG_I2C + if (mc34708->mode == MC34708_MODE_I2C) + return mc34708_i2c_reg_write(mc34708, reg, val); +#endif +#ifdef CONFIG_SPI + if (mc34708->mode == MC34708_MODE_SPI) + return mc34708_spi_reg_write(mc34708, reg, val); +#endif + return -EINVAL; +} +EXPORT_SYMBOL(mc34708_reg_write); + +int mc34708_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) +{ +#ifdef CONFIG_I2C + if (mc34708->mode == MC34708_MODE_I2C) + return mc34708_i2c_reg_read(mc34708, reg, val); +#endif +#ifdef CONFIG_SPI + if (mc34708->mode == MC34708_MODE_SPI) + return mc34708_spi_reg_read(mc34708, reg, val); +#endif + return -EINVAL; +} +EXPORT_SYMBOL(mc34708_reg_read); + +int mc34708_set_bits(struct mc34708 *mc34708, enum mc34708_reg reg, u32 mask, u32 val) +{ + u32 tmp; + int err; + + err = mc34708_reg_read(mc34708, reg, &tmp); + tmp = (tmp & ~mask) | val; + + if (!err) + err = mc34708_reg_write(mc34708, reg, tmp); + + return err; +} +EXPORT_SYMBOL(mc34708_set_bits); + +static ssize_t mc_read(struct cdev *cdev, void *_buf, size_t count, ulong offset, ulong flags) +{ + struct mc34708 *priv = to_mc34708(cdev); + u32 *buf = _buf; + size_t i = count >> 2; + int err; + + offset >>= 2; + + while (i) { + err = mc34708_reg_read(priv, offset, buf); + if (err) + return (ssize_t)err; + buf++; + i--; + offset++; + } + + return count; +} + +static ssize_t mc_write(struct cdev *cdev, const void *_buf, size_t count, ulong offset, ulong flags) +{ + struct mc34708 *mc34708 = to_mc34708(cdev); + const u32 *buf = _buf; + size_t i = count >> 2; + int err; + + offset >>= 2; + + while (i) { + err = mc34708_reg_write(mc34708, offset, *buf); + if (err) + return (ssize_t)err; + buf++; + i--; + offset++; + } + + return count; +} + +static struct file_operations mc_fops = { + .lseek = dev_lseek_default, + .read = mc_read, + .write = mc_write, +}; + +static int mc34708_query_revision(struct mc34708 *mc34708) +{ + unsigned int rev_id; + int rev; + + mc34708_reg_read(mc34708, 7, &rev_id); + + if (rev_id > 0xFFF) + return -EINVAL; + + rev = rev_id & 0xFFF; + + dev_info(mc_dev->cdev.dev, "MC34708 ID: 0x%04x\n", rev); + + mc34708->revision = rev; + + return rev; +} + +static int mc_probe(struct device_d *dev, enum mc34708_mode mode) +{ + int rev; + + if (mc_dev) + return -EBUSY; + + mc_dev = xzalloc(sizeof(struct mc34708)); + mc_dev->mode = mode; + mc_dev->cdev.name = DRIVERNAME; + if (mode == MC34708_MODE_I2C) { + mc_dev->client = to_i2c_client(dev); + } + if (mode == MC34708_MODE_SPI) { + mc_dev->spi = dev->type_data; + mc_dev->spi->mode = SPI_MODE_0 | SPI_CS_HIGH; + mc_dev->spi->bits_per_word = 32; + } + mc_dev->cdev.size = 256; + mc_dev->cdev.dev = dev; + mc_dev->cdev.ops = &mc_fops; + + rev = mc34708_query_revision(mc_dev); + if (rev < 0) { + free(mc_dev); + mc_dev = NULL; + return -EINVAL; + } + + devfs_create(&mc_dev->cdev); + + return 0; +} + +static int mc_i2c_probe(struct device_d *dev) +{ + return mc_probe(dev, MC34708_MODE_I2C); +} + +static int mc_spi_probe(struct device_d *dev) +{ + return mc_probe(dev, MC34708_MODE_SPI); +} + +static struct driver_d mc_i2c_driver = { + .name = "mc34708-i2c", + .probe = mc_i2c_probe, +}; + +static struct driver_d mc_spi_driver = { + .name = "mc34708-spi", + .probe = mc_spi_probe, +}; + +static int mc_init(void) +{ + register_driver(&mc_i2c_driver); + register_driver(&mc_spi_driver); + return 0; +} + +device_initcall(mc_init); diff --git a/include/mfd/mc34708.h b/include/mfd/mc34708.h new file mode 100644 index 0000000..f384c62 --- /dev/null +++ b/include/mfd/mc34708.h @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2009 Marc Kleine-Budde <mkl@pengutronix.de> + * + * This file is released under the GPLv2 + * + * Derived from: + * - arch-mxc/pmic_external.h -- contains interface of the PMIC protocol driver + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + * + */ + +#ifndef __ASM_ARCH_MC34708_H +#define __ASM_ARCH_MC34708_H + +enum mc34708_reg { + MC34708_REG_INT_STATUS0 = 0x00, + MC34708_REG_INT_MASK0 = 0x01, + MC34708_REG_INT_SENSE0 = 0x02, + MC34708_REG_INT_STATUS1 = 0x03, + MC34708_REG_INT_MASK1 = 0x04, + MC34708_REG_INT_SENSE1 = 0x05, + MC34708_REG_PU_MODE_S = 0x06, + MC34708_REG_IDENTIFICATION = 0x07, + MC34708_REG_REG_FAULT_S = 0x08, + MC34708_REG_ACC0 = 0x09, + MC34708_REG_ACC1 = 0x0a, + MC34708_REG_ACC2 = 0x0b, + MC34708_REG_UNUSED0 = 0x0c, + MC34708_REG_POWER_CTL0 = 0x0d, + MC34708_REG_POWER_CTL1 = 0x0e, + MC34708_REG_POWER_CTL2 = 0x0f, + MC34708_REG_MEM_A = 0x10, + MC34708_REG_MEM_B = 0x11, + MC34708_REG_MEM_C = 0x12, + MC34708_REG_MEM_D = 0x13, + MC34708_REG_RTC_TIME = 0x14, + MC34708_REG_RTC_ALARM = 0x15, + MC34708_REG_RTC_DAY = 0x16, + MC34708_REG_RTC_DAY_ALARM = 0x17, + MC34708_REG_1 = 0x18, + MC34708_REG_2_3 = 0x19, + MC34708_REG_4 = 0x1a, + MC34708_REG_5 = 0x1b, + MC34708_REG_1_2_MODE = 0x1c, + MC34708_REG_3_4_5_MODE = 0x1d, + MC34708_REG_SETTING_0 = 0x1e, + MC34708_REG_SWBST_CTRL = 0x1f, + MC34708_REG_MODE_0 = 0x20, + MC34708_REG_GPIOLV0_CTRL = 0x21, + MC34708_REG_GPIOLV1_CTRL = 0x22, + MC34708_REG_GPIOLV2_CTRL = 0x23, + MC34708_REG_GPIOLV3_CTRL = 0x24, + MC34708_REG_USB_TIMING = 0x25, + MC34708_REG_USB_BUTTON = 0x26, + MC34708_REG_USB_CTRL = 0x27, + MC34708_REG_USB_DEVTYPE = 0x28, + MC34708_REG_UNUSED1 = 0x29, + MC34708_REG_UNUSED2 = 0x2a, + MC34708_REG_ADC0 = 0x2b, + MC34708_REG_ADC1 = 0x2c, + MC34708_REG_ADC2 = 0x2d, + MC34708_REG_ADC3 = 0x2e, + MC34708_REG_ADC4 = 0x2f, + MC34708_REG_ADC5 = 0x30, + MC34708_REG_ADC6 = 0x31, + MC34708_REG_ADC7 = 0x32, + MC34708_REG_BAT_PROFILE = 0x33, + MC34708_REG_CHRG_DEBOUNCE = 0x34, + MC34708_REG_CHRG_SOURCE = 0x35, + MC34708_REG_CHRG_LED_CTRL = 0x36, + MC34708_REG_PWM_CTRL = 0x37, + MC34708_REG_UNUSED3 = 0x38, + MC34708_REG_UNUSED4 = 0x39, + MC34708_REG_UNUSED5 = 0x3a, + MC34708_REG_UNUSED6 = 0x3b, + MC34708_REG_UNUSED7 = 0x3c, + MC34708_REG_UNUSED8 = 0x3d, + MC34708_REG_UNUSED9 = 0x3e, + MC34708_REG_UNUSED10 = 0x3f, +}; + + +enum mc34708_mode { + MC34708_MODE_I2C, + MC34708_MODE_SPI, +}; + +struct mc34708 { + struct cdev cdev; + struct i2c_client *client; + struct spi_device *spi; + enum mc34708_mode mode; + unsigned int revision; +}; + +extern struct mc34708 *mc34708_get(void); + +extern int mc34708_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val); +extern int mc34708_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val); +extern int mc34708_set_bits(struct mc34708 *mc34708, enum mc34708_reg reg, u32 mask, u32 val); + +#endif /* __ASM_ARCH_MC34708_H */ -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 0:27 ` [PATCH 2/7] mfd: add mc34708 driver Eric Bénard @ 2012-02-21 3:48 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 7:03 ` Eric Bénard 0 siblings, 1 reply; 28+ messages in thread From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 3:48 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox > +static struct mc34708 *mc_dev; > + > +struct mc34708 *mc34708_get(void) > +{ > + if (!mc_dev) > + return NULL; > + > + return mc_dev; > +} > +EXPORT_SYMBOL(mc34708_get); no please do not export the current as it will not alloe multiple chip on board > + > +#ifdef CONFIG_SPI please drop the ifdef > +static int spi_rw(struct spi_device *spi, void * buf, size_t len) > +{ > + int ret; > + > + struct spi_transfer t = { > + .tx_buf = (const void *)buf, > + .rx_buf = buf, > + .len = len, > + .cs_change = 0, > + .delay_usecs = 0, > + }; > + struct spi_message m; > + > + spi_message_init(&m); > + spi_message_add_tail(&t, &m); > + > + if ((ret = spi_sync(spi, &m))) > + return ret; > + return 0; > +} > + > +#define MXC_PMIC_REG_NUM(reg) (((reg) & 0x3f) << 25) > +#define MXC_PMIC_WRITE (1 << 31) > + > +static int mc34708_spi_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) > +{ > + uint32_t buf; > + > + buf = MXC_PMIC_REG_NUM(reg); > + > + spi_rw(mc34708->spi, &buf, 4); you need to check the return > + > + *val = buf; > + > + return 0; > +} > + > +static int mc34708_spi_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) > +{ > + uint32_t buf = MXC_PMIC_REG_NUM(reg) | MXC_PMIC_WRITE | (val & 0xffffff); > + > + spi_rw(mc34708->spi, &buf, 4); ditto > + > + return 0; > +} > +#endif > + > +#ifdef CONFIG_I2C please drop the ifdef > +static int mc34708_i2c_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) > +{ > + u8 buf[3]; > + int ret; > + > + ret = i2c_read_reg(mc34708->client, reg, buf, 3); > + *val = buf[0] << 16 | buf[1] << 8 | buf[2] << 0; > + > + return ret == 3 ? 0 : ret; > +} > + > +static int mc34708_i2c_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) > +{ > + u8 buf[] = { > + val >> 16, > + val >> 8, > + val >> 0, > + }; why not convert val as a u8* and did this wirk on big endian? > + int ret; > + > + ret = i2c_write_reg(mc34708->client, reg, buf, 3); > + > + return ret == 3 ? 0 : ret; > +} > +#endif > + > +int mc34708_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) > +{ > +#ifdef CONFIG_I2C please use IS_ENABLED > + if (mc34708->mode == MC34708_MODE_I2C) > + return mc34708_i2c_reg_write(mc34708, reg, val); > +#endif > +#ifdef CONFIG_SPI ditto > + if (mc34708->mode == MC34708_MODE_SPI) > + return mc34708_spi_reg_write(mc34708, reg, val); > +#endif > + return -EINVAL; > +} > +EXPORT_SYMBOL(mc34708_reg_write); > + > +int mc34708_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) > +{ > +#ifdef CONFIG_I2C ditto > + if (mc34708->mode == MC34708_MODE_I2C) > + return mc34708_i2c_reg_read(mc34708, reg, val); > +#endif > +#ifdef CONFIG_SPI > + if (mc34708->mode == MC34708_MODE_SPI) > + return mc34708_spi_reg_read(mc34708, reg, val); > +#endif > + return -EINVAL; > +} > +EXPORT_SYMBOL(mc34708_reg_read); > + > +int mc34708_set_bits(struct mc34708 *mc34708, enum mc34708_reg reg, u32 mask, u32 val) > +{ > + u32 tmp; > + int err; > + > + err = mc34708_reg_read(mc34708, reg, &tmp); > + tmp = (tmp & ~mask) | val; no need if err != 0 > + > + if (!err) > + err = mc34708_reg_write(mc34708, reg, tmp); > + > + return err; > +} > +EXPORT_SYMBOL(mc34708_set_bits); > + > +static ssize_t mc_read(struct cdev *cdev, void *_buf, size_t count, ulong offset, ulong flags) > +{ > + struct mc34708 *priv = to_mc34708(cdev); > + u32 *buf = _buf; > + size_t i = count >> 2; > + int err; > + > + offset >>= 2; > + > + while (i) { > + err = mc34708_reg_read(priv, offset, buf); > + if (err) > + return (ssize_t)err; > + buf++; > + i--; > + offset++; > + } > + > + return count; > +} > + > +static ssize_t mc_write(struct cdev *cdev, const void *_buf, size_t count, ulong offset, ulong flags) > +{ > + struct mc34708 *mc34708 = to_mc34708(cdev); > + const u32 *buf = _buf; > + size_t i = count >> 2; > + int err; > + > + offset >>= 2; > + > + while (i) { > + err = mc34708_reg_write(mc34708, offset, *buf); > + if (err) > + return (ssize_t)err; > + buf++; > + i--; > + offset++; > + } > + > + return count; > +} > + > +static struct file_operations mc_fops = { > + .lseek = dev_lseek_default, > + .read = mc_read, > + .write = mc_write, > +}; > + > +static int mc34708_query_revision(struct mc34708 *mc34708) > +{ > + unsigned int rev_id; > + int rev; > + > + mc34708_reg_read(mc34708, 7, &rev_id); > + > + if (rev_id > 0xFFF) > + return -EINVAL; > + > + rev = rev_id & 0xFFF; > + > + dev_info(mc_dev->cdev.dev, "MC34708 ID: 0x%04x\n", rev); > + > + mc34708->revision = rev; > + > + return rev; > +} > + > +static int mc_probe(struct device_d *dev, enum mc34708_mode mode) > +{ > + int rev; > + > + if (mc_dev) > + return -EBUSY; > + > + mc_dev = xzalloc(sizeof(struct mc34708)); > + mc_dev->mode = mode; > + mc_dev->cdev.name = DRIVERNAME; > + if (mode == MC34708_MODE_I2C) { please use IS_ENABLED > + mc_dev->client = to_i2c_client(dev); > + } ditto > + if (mode == MC34708_MODE_SPI) { > + mc_dev->spi = dev->type_data; > + mc_dev->spi->mode = SPI_MODE_0 | SPI_CS_HIGH; > + mc_dev->spi->bits_per_word = 32; > + } > + mc_dev->cdev.size = 256; > + mc_dev->cdev.dev = dev; > + mc_dev->cdev.ops = &mc_fops; > + > + rev = mc34708_query_revision(mc_dev); > + if (rev < 0) { > + free(mc_dev); > + mc_dev = NULL; > + return -EINVAL; > + } > + > + devfs_create(&mc_dev->cdev); return? > + > + return 0; > +} > + > +static int mc_i2c_probe(struct device_d *dev) > +{ > + return mc_probe(dev, MC34708_MODE_I2C); > +} > + > +static int mc_spi_probe(struct device_d *dev) > +{ > + return mc_probe(dev, MC34708_MODE_SPI); > +} > + > +static struct driver_d mc_i2c_driver = { > + .name = "mc34708-i2c", > + .probe = mc_i2c_probe, > +}; > + > +static struct driver_d mc_spi_driver = { > + .name = "mc34708-spi", > + .probe = mc_spi_probe, > +}; > + > +static int mc_init(void) > +{ please use IS_ENABLED > + register_driver(&mc_i2c_driver); > + register_driver(&mc_spi_driver); > + return 0; Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 3:48 ` Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 7:03 ` Eric Bénard 2012-02-21 13:03 ` Jean-Christophe PLAGNIOL-VILLARD 0 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-21 7:03 UTC (permalink / raw) To: Jean-Christophe PLAGNIOL-VILLARD; +Cc: barebox Le Tue, 21 Feb 2012 04:48:35 +0100, Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > +static struct mc34708 *mc_dev; > > + > > +struct mc34708 *mc34708_get(void) > > +{ > > + if (!mc_dev) > > + return NULL; > > + > > + return mc_dev; > > +} > > +EXPORT_SYMBOL(mc34708_get); > no please do not export the current as it will not alloe multiple chip on > board you can't have more than one of this chip on the board connected to the same CPU. Eric -- http://eukrea.com/en/news/104-2012 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 7:03 ` Eric Bénard @ 2012-02-21 13:03 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 13:22 ` Eric Bénard 0 siblings, 1 reply; 28+ messages in thread From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 13:03 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox On 08:03 Tue 21 Feb , Eric Bénard wrote: > Le Tue, 21 Feb 2012 04:48:35 +0100, > Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > > > +static struct mc34708 *mc_dev; > > > + > > > +struct mc34708 *mc34708_get(void) > > > +{ > > > + if (!mc_dev) > > > + return NULL; > > > + > > > + return mc_dev; > > > +} > > > +EXPORT_SYMBOL(mc34708_get); > > no please do not export the current as it will not alloe multiple chip on > > board > you can't have more than one of this chip on the board connected to > the same CPU. except if you have 2 soc on the same board here you use it to detect the presence of the device where we can detect it by the presence of the dev file Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 13:03 ` Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 13:22 ` Eric Bénard 2012-02-21 14:10 ` Jean-Christophe PLAGNIOL-VILLARD 0 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-21 13:22 UTC (permalink / raw) To: Jean-Christophe PLAGNIOL-VILLARD; +Cc: barebox Le Tue, 21 Feb 2012 14:03:18 +0100, Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > On 08:03 Tue 21 Feb , Eric Bénard wrote: > > Le Tue, 21 Feb 2012 04:48:35 +0100, > > Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > > > > > +static struct mc34708 *mc_dev; > > > > + > > > > +struct mc34708 *mc34708_get(void) > > > > +{ > > > > + if (!mc_dev) > > > > + return NULL; > > > > + > > > > + return mc_dev; > > > > +} > > > > +EXPORT_SYMBOL(mc34708_get); > > > no please do not export the current as it will not alloe multiple chip on > > > board > > you can't have more than one of this chip on the board connected to > > the same CPU. > except if you have 2 soc on the same board > that's why I said "connected to the same CPU". If you have 2 SOC, each SOC will have its own PMIC thus it's own barebox, thus no problem. > here you use it to detect the presence of the device where we can detect it by > the presence of the dev file in the future we will also use that to write to the PMIC (as done on mx35-3stack for example). Eric -- http://eukrea.com/en/news/104-2012 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 13:22 ` Eric Bénard @ 2012-02-21 14:10 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 15:35 ` Eric Bénard 0 siblings, 1 reply; 28+ messages in thread From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 14:10 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox On 14:22 Tue 21 Feb , Eric Bénard wrote: > Le Tue, 21 Feb 2012 14:03:18 +0100, > Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > > On 08:03 Tue 21 Feb , Eric Bénard wrote: > > > Le Tue, 21 Feb 2012 04:48:35 +0100, > > > Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > > > > > > > +static struct mc34708 *mc_dev; > > > > > + > > > > > +struct mc34708 *mc34708_get(void) > > > > > +{ > > > > > + if (!mc_dev) > > > > > + return NULL; > > > > > + > > > > > + return mc_dev; > > > > > +} > > > > > +EXPORT_SYMBOL(mc34708_get); > > > > no please do not export the current as it will not alloe multiple chip on > > > > board > > > you can't have more than one of this chip on the board connected to > > > the same CPU. > > except if you have 2 soc on the same board > > > that's why I said "connected to the same CPU". > If you have 2 SOC, each SOC will have its own PMIC thus it's own > barebox, thus no problem. > > > here you use it to detect the presence of the device where we can detect it by > > the presence of the dev file > > in the future we will also use that to write to the PMIC (as done on > mx35-3stack for example). I still don't like the idea to export it You need a proper API to manage the PMIC so for today no need of this and I doubt the API will need it Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 14:10 ` Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 15:35 ` Eric Bénard 2012-02-21 15:38 ` Jean-Christophe PLAGNIOL-VILLARD 0 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-21 15:35 UTC (permalink / raw) To: Jean-Christophe PLAGNIOL-VILLARD; +Cc: barebox Le Tue, 21 Feb 2012 15:10:11 +0100, Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > I still don't like the idea to export it > > You need a proper API to manage the PMIC > > so for today no need of this and I doubt the API will need it > for today we have what is inside barebox and this patche is coherent with what is actually inside barebox (please check other drivers in mfd and mx35-3stack for example). For the future we may no more need this if we have a proper PMIC API but as this API actually is not written, this patchset makes sense. Eric -- http://eukrea.com/en/news/104-2012 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 15:35 ` Eric Bénard @ 2012-02-21 15:38 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 20:45 ` Sascha Hauer 0 siblings, 1 reply; 28+ messages in thread From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 15:38 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox On 16:35 Tue 21 Feb , Eric Bénard wrote: > Le Tue, 21 Feb 2012 15:10:11 +0100, > Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > I still don't like the idea to export it > > > > You need a proper API to manage the PMIC > > > > so for today no need of this and I doubt the API will need it > > > for today we have what is inside barebox and this patche is coherent > with what is actually inside barebox (please check other drivers in mfd > and mx35-3stack for example). > For the future we may no more need this if we have a proper PMIC API > but as this API actually is not written, this patchset makes sense. today you do not need it today you just need to known it the chip is here so just check if the devfs is present Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 15:38 ` Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 20:45 ` Sascha Hauer 2012-02-21 21:09 ` Marc Reilly 0 siblings, 1 reply; 28+ messages in thread From: Sascha Hauer @ 2012-02-21 20:45 UTC (permalink / raw) To: Jean-Christophe PLAGNIOL-VILLARD; +Cc: barebox On Tue, Feb 21, 2012 at 04:38:56PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote: > On 16:35 Tue 21 Feb , Eric Bénard wrote: > > Le Tue, 21 Feb 2012 15:10:11 +0100, > > Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> a écrit : > > > I still don't like the idea to export it > > > > > > You need a proper API to manage the PMIC > > > > > > so for today no need of this and I doubt the API will need it > > > > > for today we have what is inside barebox and this patche is coherent > > with what is actually inside barebox (please check other drivers in mfd > > and mx35-3stack for example). > > For the future we may no more need this if we have a proper PMIC API > > but as this API actually is not written, this patchset makes sense. > today you do not need it > > today you just need to known it the chip is here > > so just check if the devfs is present > Don't know where your problem is with exporting it. Yes, it supports only a single pmic, but that's all we have on the boards I know. And this function can be used to modify registers on the pmic, some boards need this. The day might come when we need some regulator API, but we are not there and often enough getting a board to run properly is just 'modify this damn bit in the pmic' Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH 2/7] mfd: add mc34708 driver 2012-02-21 20:45 ` Sascha Hauer @ 2012-02-21 21:09 ` Marc Reilly 0 siblings, 0 replies; 28+ messages in thread From: Marc Reilly @ 2012-02-21 21:09 UTC (permalink / raw) To: barebox [-- Attachment #1.1: Type: text/plain, Size: 1510 bytes --] Hi, My $0.02 ... > > > for today we have what is inside barebox and this patche is coherent > > > with what is actually inside barebox (please check other drivers in mfd > > > and mx35-3stack for example). > > > For the future we may no more need this if we have a proper PMIC API > > > but as this API actually is not written, this patchset makes sense. > > > > today you do not need it > > > > today you just need to known it the chip is here > > > > so just check if the devfs is present > > Don't know where your problem is with exporting it. I also don't see the problem. 99.9% of designs using this IC (family) will only have one of them on a board. If someone puts more than one on their board then they should be the person to manage dealing with two. > Yes, it supports > only a single pmic, but that's all we have on the boards I know. And > this function can be used to modify registers on the pmic, some boards > need this. The day might come when we need some regulator API, but we > are not there and The board I have uses an mc13892 - there is stuff we need to we need to do which is unrelated to regulators like increasing the charge/supply current and detecting critically low battery. Calling xxxx_set_bits() is much better than a read/modify/write from dev file. > often enough getting a board to run properly is just > 'modify this damn bit in the pmic' I've said "this damn pmic" quite a few times about the 13892 :) (Has anyone else had troubles too?) Cheers, Marc [-- Attachment #1.2: Type: text/html, Size: 7642 bytes --] [-- Attachment #2: Type: text/plain, Size: 149 bytes --] _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* [PATCH 3/7] i.MX53: add silicn revision functions 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard 2012-02-21 0:27 ` [PATCH 2/7] mfd: add mc34708 driver Eric Bénard @ 2012-02-21 0:27 ` Eric Bénard 2012-02-22 7:33 ` Sascha Hauer 2012-02-21 0:27 ` [PATCH 4/7] i.MX53: enable pull up on I2C0 pins Eric Bénard ` (3 subsequent siblings) 5 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw) To: barebox Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/mach-imx/imx53.c | 45 +++++++++++++++++++++++++++ arch/arm/mach-imx/include/mach/imx53-regs.h | 5 +++ 2 files changed, 50 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c index 4f7d1cb..acb9d49 100644 --- a/arch/arm/mach-imx/imx53.c +++ b/arch/arm/mach-imx/imx53.c @@ -37,6 +37,51 @@ void *imx_gpio_base[] = { int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32; +#define SI_REV 0x48 + +static u32 mx53_silicon_revision; +static char *mx53_rev_string = "unknown"; + +int imx_silicon_revision(void) +{ + return mx53_silicon_revision; +} + +static int query_silicon_revision(void) +{ + void __iomem *rom = MX53_IROM_BASE_ADDR; + u32 rev; + + rev = readl(rom + SI_REV); + switch (rev) { + case 0x10: + mx53_silicon_revision = MX53_CHIP_REV_1_0; + mx53_rev_string = "1.0"; + break; + case 0x20: + mx53_silicon_revision = MX53_CHIP_REV_2_0; + mx53_rev_string = "2.0"; + break; + case 0x21: + mx53_silicon_revision = MX53_CHIP_REV_2_1; + mx53_rev_string = "2.1"; + break; + default: + mx53_silicon_revision = 0; + } + + return 0; +} +core_initcall(query_silicon_revision); + +static int imx53_print_silicon_rev(void) +{ + printf("detected i.MX53 rev %s\n", mx53_rev_string); + + return 0; +} +device_initcall(imx53_print_silicon_rev); + static int imx53_init(void) { add_generic_device("imx_iim", 0, NULL, MX53_IIM_BASE_ADDR, SZ_4K, diff --git a/arch/arm/mach-imx/include/mach/imx53-regs.h b/arch/arm/mach-imx/include/mach/imx53-regs.h index 8fefc54..065bf08 100644 --- a/arch/arm/mach-imx/include/mach/imx53-regs.h +++ b/arch/arm/mach-imx/include/mach/imx53-regs.h @@ -135,5 +135,10 @@ #define MX53_CS2_96MB_BASE_ADDR 0xF6000000 #define MX53_CS3_BASE_ADDR 0xF6000000 +/* silicon revisions specific to i.MX53 */ +#define MX53_CHIP_REV_1_0 0x10 +#define MX53_CHIP_REV_2_0 0x20 +#define MX53_CHIP_REV_2_1 0x21 + #endif /* __MACH_IMX53_REGS_H */ -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* Re: [PATCH 3/7] i.MX53: add silicn revision functions 2012-02-21 0:27 ` [PATCH 3/7] i.MX53: add silicn revision functions Eric Bénard @ 2012-02-22 7:33 ` Sascha Hauer 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard 0 siblings, 1 reply; 28+ messages in thread From: Sascha Hauer @ 2012-02-22 7:33 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox On Tue, Feb 21, 2012 at 01:27:35AM +0100, Eric Bénard wrote: > Signed-off-by: Eric Bénard <eric@eukrea.com> > --- > arch/arm/mach-imx/imx53.c | 45 +++++++++++++++++++++++++++ > arch/arm/mach-imx/include/mach/imx53-regs.h | 5 +++ > 2 files changed, 50 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c > index 4f7d1cb..acb9d49 100644 > --- a/arch/arm/mach-imx/imx53.c > +++ b/arch/arm/mach-imx/imx53.c > @@ -37,6 +37,51 @@ void *imx_gpio_base[] = { > > int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32; > > +#define SI_REV 0x48 > + > +static u32 mx53_silicon_revision; > +static char *mx53_rev_string = "unknown"; > + > +int imx_silicon_revision(void) > +{ > + return mx53_silicon_revision; > +} > + > +static int query_silicon_revision(void) > +{ > + void __iomem *rom = MX53_IROM_BASE_ADDR; > + u32 rev; > + > + rev = readl(rom + SI_REV); > + switch (rev) { > + case 0x10: > + mx53_silicon_revision = MX53_CHIP_REV_1_0; > + mx53_rev_string = "1.0"; > + break; > + case 0x20: > + mx53_silicon_revision = MX53_CHIP_REV_2_0; > + mx53_rev_string = "2.0"; > + break; > + case 0x21: > + mx53_silicon_revision = MX53_CHIP_REV_2_1; > + mx53_rev_string = "2.1"; > + break; > + default: > + mx53_silicon_revision = 0; > + } > + > + return 0; > +} > +core_initcall(query_silicon_revision); > + > +static int imx53_print_silicon_rev(void) > +{ > + printf("detected i.MX53 rev %s\n", mx53_rev_string); > + > + return 0; > +} > +device_initcall(imx53_print_silicon_rev); > + > static int imx53_init(void) > { > add_generic_device("imx_iim", 0, NULL, MX53_IIM_BASE_ADDR, SZ_4K, > diff --git a/arch/arm/mach-imx/include/mach/imx53-regs.h b/arch/arm/mach-imx/include/mach/imx53-regs.h > index 8fefc54..065bf08 100644 > --- a/arch/arm/mach-imx/include/mach/imx53-regs.h > +++ b/arch/arm/mach-imx/include/mach/imx53-regs.h > @@ -135,5 +135,10 @@ > #define MX53_CS2_96MB_BASE_ADDR 0xF6000000 > #define MX53_CS3_BASE_ADDR 0xF6000000 > > +/* silicon revisions specific to i.MX53 */ > +#define MX53_CHIP_REV_1_0 0x10 > +#define MX53_CHIP_REV_2_0 0x20 > +#define MX53_CHIP_REV_2_1 0x21 Can you please add the chip revisions to imx-regs.h and replace the MX53_ prefix with a IMX_ prefix? They are the same for all i.MX SoCs. We can then let the other SoCs use these defines later. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* [PATCH v2 1/7] add i2c clock support 2012-02-22 7:33 ` Sascha Hauer @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 8:20 ` [PATCH v2 2/7] mfd: add mc34708 driver Eric Bénard ` (6 more replies) 0 siblings, 7 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/mach-imx/speed-imx53.c | 26 ++++++++++++++++++++++++++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-imx/speed-imx53.c b/arch/arm/mach-imx/speed-imx53.c index 0d6ac24..a2385fa 100644 --- a/arch/arm/mach-imx/speed-imx53.c +++ b/arch/arm/mach-imx/speed-imx53.c @@ -169,6 +169,31 @@ unsigned long imx_get_fecclk(void) return imx_get_ipgclk(); } +static unsigned long imx_get_ipg_perclk(void) +{ + u32 reg; + + reg = ccm_readl(MX5_CCM_CBCDR); + if (!(reg & MX5_CCM_CBCDR_PERIPH_CLK_SEL)) + return pll2_sw_get_rate(); + reg = ccm_readl(MX5_CCM_CBCMR); + switch ((reg & MX5_CCM_CBCMR_PERIPH_CLK_SEL_MASK) >> + MX5_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET) { + case 0: + return pll1_main_get_rate(); + case 1: + return pll3_sw_get_rate(); + /* case 2: + TODO : LP_APM */ + } + return 0; +} + +unsigned long imx_get_i2cclk(void) +{ + return imx_get_ipg_perclk(); +} + unsigned long imx_get_mmcclk(void) { u32 reg, prediv, podf, rate; @@ -201,4 +226,5 @@ void imx_dump_clocks(void) printf("ipg: %ld\n", imx_get_ipgclk()); printf("fec: %ld\n", imx_get_fecclk()); printf("gpt: %ld\n", imx_get_gptclk()); + printf("i2c: %ld\n", imx_get_i2cclk()); } -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH v2 2/7] mfd: add mc34708 driver 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 8:20 ` [PATCH v2 3/7] i.MX53: add silicon revision functions Eric Bénard ` (5 subsequent siblings) 6 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox this driver is a copie of the mc13892 one Signed-off-by: Eric Bénard <eric@eukrea.com> --- drivers/mfd/Kconfig | 4 + drivers/mfd/Makefile | 1 + drivers/mfd/mc34708.c | 294 +++++++++++++++++++++++++++++++++++++++++++++++++ include/mfd/mc34708.h | 102 +++++++++++++++++ 4 files changed, 401 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/mc34708.c create mode 100644 include/mfd/mc34708.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 87797de..b080c1c 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -8,6 +8,10 @@ config I2C_MC34704 depends on I2C bool "MC34704 PMIC driver" +config I2C_MC34708 + depends on I2C + bool "MC34708 PMIC driver" + config I2C_MC9SDZ60 depends on I2C bool "MC9SDZ60 driver" diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 1171335..bc9e0e8 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_I2C_MC13892) += mc13892.o obj-$(CONFIG_I2C_MC34704) += mc34704.o +obj-$(CONFIG_I2C_MC34708) += mc34708.o obj-$(CONFIG_I2C_MC9SDZ60) += mc9sdz60.o obj-$(CONFIG_I2C_LP3972) += lp3972.o obj-$(CONFIG_I2C_TWLCORE) += twl-core.o diff --git a/drivers/mfd/mc34708.c b/drivers/mfd/mc34708.c new file mode 100644 index 0000000..e7f40c0 --- /dev/null +++ b/drivers/mfd/mc34708.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) 2007 Sascha Hauer, Pengutronix + * 2009 Marc Kleine-Budde <mkl@pengutronix.de> + * + * 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 <init.h> +#include <driver.h> +#include <xfuncs.h> +#include <errno.h> +#include <spi/spi.h> +#include <malloc.h> + +#include <i2c/i2c.h> +#include <mfd/mc34708.h> + +#define DRIVERNAME "mc34708" + +#define to_mc34708(a) container_of(a, struct mc34708, cdev) + +static struct mc34708 *mc_dev; + +struct mc34708 *mc34708_get(void) +{ + if (!mc_dev) + return NULL; + + return mc_dev; +} +EXPORT_SYMBOL(mc34708_get); + +#ifdef CONFIG_SPI +static int spi_rw(struct spi_device *spi, void * buf, size_t len) +{ + int ret; + + struct spi_transfer t = { + .tx_buf = (const void *)buf, + .rx_buf = buf, + .len = len, + .cs_change = 0, + .delay_usecs = 0, + }; + struct spi_message m; + + spi_message_init(&m); + spi_message_add_tail(&t, &m); + + if ((ret = spi_sync(spi, &m))) + return ret; + return 0; +} + +#define MXC_PMIC_REG_NUM(reg) (((reg) & 0x3f) << 25) +#define MXC_PMIC_WRITE (1 << 31) + +static int mc34708_spi_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) +{ + uint32_t buf; + + buf = MXC_PMIC_REG_NUM(reg); + + spi_rw(mc34708->spi, &buf, 4); + + *val = buf; + + return 0; +} + +static int mc34708_spi_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) +{ + uint32_t buf = MXC_PMIC_REG_NUM(reg) | MXC_PMIC_WRITE | (val & 0xffffff); + + spi_rw(mc34708->spi, &buf, 4); + + return 0; +} +#endif + +#ifdef CONFIG_I2C +static int mc34708_i2c_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) +{ + u8 buf[3]; + int ret; + + ret = i2c_read_reg(mc34708->client, reg, buf, 3); + *val = buf[0] << 16 | buf[1] << 8 | buf[2] << 0; + + return ret == 3 ? 0 : ret; +} + +static int mc34708_i2c_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) +{ + u8 buf[] = { + val >> 16, + val >> 8, + val >> 0, + }; + int ret; + + ret = i2c_write_reg(mc34708->client, reg, buf, 3); + + return ret == 3 ? 0 : ret; +} +#endif + +int mc34708_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val) +{ +#ifdef CONFIG_I2C + if (mc34708->mode == MC34708_MODE_I2C) + return mc34708_i2c_reg_write(mc34708, reg, val); +#endif +#ifdef CONFIG_SPI + if (mc34708->mode == MC34708_MODE_SPI) + return mc34708_spi_reg_write(mc34708, reg, val); +#endif + return -EINVAL; +} +EXPORT_SYMBOL(mc34708_reg_write); + +int mc34708_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val) +{ +#ifdef CONFIG_I2C + if (mc34708->mode == MC34708_MODE_I2C) + return mc34708_i2c_reg_read(mc34708, reg, val); +#endif +#ifdef CONFIG_SPI + if (mc34708->mode == MC34708_MODE_SPI) + return mc34708_spi_reg_read(mc34708, reg, val); +#endif + return -EINVAL; +} +EXPORT_SYMBOL(mc34708_reg_read); + +int mc34708_set_bits(struct mc34708 *mc34708, enum mc34708_reg reg, u32 mask, u32 val) +{ + u32 tmp; + int err; + + err = mc34708_reg_read(mc34708, reg, &tmp); + tmp = (tmp & ~mask) | val; + + if (!err) + err = mc34708_reg_write(mc34708, reg, tmp); + + return err; +} +EXPORT_SYMBOL(mc34708_set_bits); + +static ssize_t mc_read(struct cdev *cdev, void *_buf, size_t count, ulong offset, ulong flags) +{ + struct mc34708 *priv = to_mc34708(cdev); + u32 *buf = _buf; + size_t i = count >> 2; + int err; + + offset >>= 2; + + while (i) { + err = mc34708_reg_read(priv, offset, buf); + if (err) + return (ssize_t)err; + buf++; + i--; + offset++; + } + + return count; +} + +static ssize_t mc_write(struct cdev *cdev, const void *_buf, size_t count, ulong offset, ulong flags) +{ + struct mc34708 *mc34708 = to_mc34708(cdev); + const u32 *buf = _buf; + size_t i = count >> 2; + int err; + + offset >>= 2; + + while (i) { + err = mc34708_reg_write(mc34708, offset, *buf); + if (err) + return (ssize_t)err; + buf++; + i--; + offset++; + } + + return count; +} + +static struct file_operations mc_fops = { + .lseek = dev_lseek_default, + .read = mc_read, + .write = mc_write, +}; + +static int mc34708_query_revision(struct mc34708 *mc34708) +{ + unsigned int rev_id; + int rev; + + mc34708_reg_read(mc34708, 7, &rev_id); + + if (rev_id > 0xFFF) + return -EINVAL; + + rev = rev_id & 0xFFF; + + dev_info(mc_dev->cdev.dev, "MC34708 ID: 0x%04x\n", rev); + + mc34708->revision = rev; + + return rev; +} + +static int mc_probe(struct device_d *dev, enum mc34708_mode mode) +{ + int rev; + + if (mc_dev) + return -EBUSY; + + mc_dev = xzalloc(sizeof(struct mc34708)); + mc_dev->mode = mode; + mc_dev->cdev.name = DRIVERNAME; + if (mode == MC34708_MODE_I2C) { + mc_dev->client = to_i2c_client(dev); + } + if (mode == MC34708_MODE_SPI) { + mc_dev->spi = dev->type_data; + mc_dev->spi->mode = SPI_MODE_0 | SPI_CS_HIGH; + mc_dev->spi->bits_per_word = 32; + } + mc_dev->cdev.size = 256; + mc_dev->cdev.dev = dev; + mc_dev->cdev.ops = &mc_fops; + + rev = mc34708_query_revision(mc_dev); + if (rev < 0) { + free(mc_dev); + mc_dev = NULL; + return -EINVAL; + } + + devfs_create(&mc_dev->cdev); + + return 0; +} + +static int mc_i2c_probe(struct device_d *dev) +{ + return mc_probe(dev, MC34708_MODE_I2C); +} + +static int mc_spi_probe(struct device_d *dev) +{ + return mc_probe(dev, MC34708_MODE_SPI); +} + +static struct driver_d mc_i2c_driver = { + .name = "mc34708-i2c", + .probe = mc_i2c_probe, +}; + +static struct driver_d mc_spi_driver = { + .name = "mc34708-spi", + .probe = mc_spi_probe, +}; + +static int mc_init(void) +{ + register_driver(&mc_i2c_driver); + register_driver(&mc_spi_driver); + return 0; +} + +device_initcall(mc_init); diff --git a/include/mfd/mc34708.h b/include/mfd/mc34708.h new file mode 100644 index 0000000..f384c62 --- /dev/null +++ b/include/mfd/mc34708.h @@ -0,0 +1,102 @@ +/* + * Copyright (C) 2009 Marc Kleine-Budde <mkl@pengutronix.de> + * + * This file is released under the GPLv2 + * + * Derived from: + * - arch-mxc/pmic_external.h -- contains interface of the PMIC protocol driver + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + * + */ + +#ifndef __ASM_ARCH_MC34708_H +#define __ASM_ARCH_MC34708_H + +enum mc34708_reg { + MC34708_REG_INT_STATUS0 = 0x00, + MC34708_REG_INT_MASK0 = 0x01, + MC34708_REG_INT_SENSE0 = 0x02, + MC34708_REG_INT_STATUS1 = 0x03, + MC34708_REG_INT_MASK1 = 0x04, + MC34708_REG_INT_SENSE1 = 0x05, + MC34708_REG_PU_MODE_S = 0x06, + MC34708_REG_IDENTIFICATION = 0x07, + MC34708_REG_REG_FAULT_S = 0x08, + MC34708_REG_ACC0 = 0x09, + MC34708_REG_ACC1 = 0x0a, + MC34708_REG_ACC2 = 0x0b, + MC34708_REG_UNUSED0 = 0x0c, + MC34708_REG_POWER_CTL0 = 0x0d, + MC34708_REG_POWER_CTL1 = 0x0e, + MC34708_REG_POWER_CTL2 = 0x0f, + MC34708_REG_MEM_A = 0x10, + MC34708_REG_MEM_B = 0x11, + MC34708_REG_MEM_C = 0x12, + MC34708_REG_MEM_D = 0x13, + MC34708_REG_RTC_TIME = 0x14, + MC34708_REG_RTC_ALARM = 0x15, + MC34708_REG_RTC_DAY = 0x16, + MC34708_REG_RTC_DAY_ALARM = 0x17, + MC34708_REG_1 = 0x18, + MC34708_REG_2_3 = 0x19, + MC34708_REG_4 = 0x1a, + MC34708_REG_5 = 0x1b, + MC34708_REG_1_2_MODE = 0x1c, + MC34708_REG_3_4_5_MODE = 0x1d, + MC34708_REG_SETTING_0 = 0x1e, + MC34708_REG_SWBST_CTRL = 0x1f, + MC34708_REG_MODE_0 = 0x20, + MC34708_REG_GPIOLV0_CTRL = 0x21, + MC34708_REG_GPIOLV1_CTRL = 0x22, + MC34708_REG_GPIOLV2_CTRL = 0x23, + MC34708_REG_GPIOLV3_CTRL = 0x24, + MC34708_REG_USB_TIMING = 0x25, + MC34708_REG_USB_BUTTON = 0x26, + MC34708_REG_USB_CTRL = 0x27, + MC34708_REG_USB_DEVTYPE = 0x28, + MC34708_REG_UNUSED1 = 0x29, + MC34708_REG_UNUSED2 = 0x2a, + MC34708_REG_ADC0 = 0x2b, + MC34708_REG_ADC1 = 0x2c, + MC34708_REG_ADC2 = 0x2d, + MC34708_REG_ADC3 = 0x2e, + MC34708_REG_ADC4 = 0x2f, + MC34708_REG_ADC5 = 0x30, + MC34708_REG_ADC6 = 0x31, + MC34708_REG_ADC7 = 0x32, + MC34708_REG_BAT_PROFILE = 0x33, + MC34708_REG_CHRG_DEBOUNCE = 0x34, + MC34708_REG_CHRG_SOURCE = 0x35, + MC34708_REG_CHRG_LED_CTRL = 0x36, + MC34708_REG_PWM_CTRL = 0x37, + MC34708_REG_UNUSED3 = 0x38, + MC34708_REG_UNUSED4 = 0x39, + MC34708_REG_UNUSED5 = 0x3a, + MC34708_REG_UNUSED6 = 0x3b, + MC34708_REG_UNUSED7 = 0x3c, + MC34708_REG_UNUSED8 = 0x3d, + MC34708_REG_UNUSED9 = 0x3e, + MC34708_REG_UNUSED10 = 0x3f, +}; + + +enum mc34708_mode { + MC34708_MODE_I2C, + MC34708_MODE_SPI, +}; + +struct mc34708 { + struct cdev cdev; + struct i2c_client *client; + struct spi_device *spi; + enum mc34708_mode mode; + unsigned int revision; +}; + +extern struct mc34708 *mc34708_get(void); + +extern int mc34708_reg_read(struct mc34708 *mc34708, enum mc34708_reg reg, u32 *val); +extern int mc34708_reg_write(struct mc34708 *mc34708, enum mc34708_reg reg, u32 val); +extern int mc34708_set_bits(struct mc34708 *mc34708, enum mc34708_reg reg, u32 mask, u32 val); + +#endif /* __ASM_ARCH_MC34708_H */ -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH v2 3/7] i.MX53: add silicon revision functions 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard 2012-02-27 8:20 ` [PATCH v2 2/7] mfd: add mc34708 driver Eric Bénard @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 8:20 ` [PATCH v2 4/7] i.MX53: enable pull up on I2C0 pins Eric Bénard ` (4 subsequent siblings) 6 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/mach-imx/imx53.c | 47 ++++++++++++++++++++++++++++- arch/arm/mach-imx/include/mach/imx-regs.h | 5 +++ 2 files changed, 51 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-imx/imx53.c b/arch/arm/mach-imx/imx53.c index 4f7d1cb..8742c46 100644 --- a/arch/arm/mach-imx/imx53.c +++ b/arch/arm/mach-imx/imx53.c @@ -20,7 +20,7 @@ #include <io.h> #include <sizes.h> #include <mach/imx5.h> -#include <mach/imx53-regs.h> +#include <mach/imx-regs.h> #include <mach/clock-imx51_53.h> #include "gpio.h" @@ -37,6 +37,51 @@ void *imx_gpio_base[] = { int imx_gpio_count = ARRAY_SIZE(imx_gpio_base) * 32; +#define SI_REV 0x48 + +static u32 mx53_silicon_revision; +static char *mx53_rev_string = "unknown"; + +int imx_silicon_revision(void) +{ + return mx53_silicon_revision; +} + +static int query_silicon_revision(void) +{ + void __iomem *rom = MX53_IROM_BASE_ADDR; + u32 rev; + + rev = readl(rom + SI_REV); + switch (rev) { + case 0x10: + mx53_silicon_revision = IMX_CHIP_REV_1_0; + mx53_rev_string = "1.0"; + break; + case 0x20: + mx53_silicon_revision = IMX_CHIP_REV_2_0; + mx53_rev_string = "2.0"; + break; + case 0x21: + mx53_silicon_revision = IMX_CHIP_REV_2_1; + mx53_rev_string = "2.1"; + break; + default: + mx53_silicon_revision = 0; + } + + return 0; +} +core_initcall(query_silicon_revision); + +static int imx53_print_silicon_rev(void) +{ + printf("detected i.MX53 rev %s\n", mx53_rev_string); + + return 0; +} +device_initcall(imx53_print_silicon_rev); + static int imx53_init(void) { add_generic_device("imx_iim", 0, NULL, MX53_IIM_BASE_ADDR, SZ_4K, diff --git a/arch/arm/mach-imx/include/mach/imx-regs.h b/arch/arm/mach-imx/include/mach/imx-regs.h index a272dda..789397e 100644 --- a/arch/arm/mach-imx/include/mach/imx-regs.h +++ b/arch/arm/mach-imx/include/mach/imx-regs.h @@ -105,4 +105,9 @@ #define GPIO_GIUS (1<<16) +/* silicon revisions */ +#define IMX_CHIP_REV_1_0 0x10 +#define IMX_CHIP_REV_2_0 0x20 +#define IMX_CHIP_REV_2_1 0x21 + #endif /* _IMX_REGS_H */ -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH v2 4/7] i.MX53: enable pull up on I2C0 pins 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard 2012-02-27 8:20 ` [PATCH v2 2/7] mfd: add mc34708 driver Eric Bénard 2012-02-27 8:20 ` [PATCH v2 3/7] i.MX53: add silicon revision functions Eric Bénard @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 8:20 ` [PATCH v2 5/7] mx53-loco: add i2c support Eric Bénard ` (3 subsequent siblings) 6 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox this allows I2C to work on boards which don't have external pull up (like LOCO board) Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/mach-imx/include/mach/iomux-mx53.h | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-imx/include/mach/iomux-mx53.h b/arch/arm/mach-imx/include/mach/iomux-mx53.h index 527f8fe..ac94deb 100644 --- a/arch/arm/mach-imx/include/mach/iomux-mx53.h +++ b/arch/arm/mach-imx/include/mach/iomux-mx53.h @@ -30,7 +30,9 @@ #define MX53_SDHC_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PKE | PAD_CTL_PUE | \ PAD_CTL_PUS_47K_UP | PAD_CTL_DSE_HIGH | \ PAD_CTL_SRE_FAST) - +#define MX53_I2C_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_22K_UP | PAD_CTL_DSE_HIGH | \ + PAD_CTL_SRE_FAST) #define MX53_PAD_GPIO_19__KPP_COL_5 IOMUX_PAD(0x348, 0x020, 0, 0x840, 0, NO_PAD_CTRL) #define MX53_PAD_GPIO_19__GPIO4_5 IOMUX_PAD(0x348, 0x020, 1, __NA_, 0, NO_PAD_CTRL) @@ -377,7 +379,7 @@ #define MX53_PAD_CSI0_DAT8__KPP_COL_7 IOMUX_PAD(0x40C, 0x0E0, 2, 0x848, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__ECSPI2_SCLK IOMUX_PAD(0x40C, 0x0E0, 3, 0x7B8, 1, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__USBOH3_USBH3_OC IOMUX_PAD(0x40C, 0x0E0, 4, __NA_, 0, NO_PAD_CTRL) -#define MX53_PAD_CSI0_DAT8__I2C1_SDA IOMUX_PAD(0x40C, 0x0E0, 5 | IOMUX_CONFIG_SION, 0x818, 0, NO_PAD_CTRL) +#define MX53_PAD_CSI0_DAT8__I2C1_SDA IOMUX_PAD(0x40C, 0x0E0, 5 | IOMUX_CONFIG_SION, 0x818, 0, MX53_I2C_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__EMI_EMI_DEBUG_37 IOMUX_PAD(0x40C, 0x0E0, 6, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__TPIU_TRACE_5 IOMUX_PAD(0x40C, 0x0E0, 7, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__IPU_CSI0_D_9 IOMUX_PAD(0x410, 0x0E4, 0, __NA_, 0, NO_PAD_CTRL) @@ -385,7 +387,7 @@ #define MX53_PAD_CSI0_DAT9__KPP_ROW_7 IOMUX_PAD(0x410, 0x0E4, 2, 0x854, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__ECSPI2_MOSI IOMUX_PAD(0x410, 0x0E4, 3, 0x7C0, 1, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__USBOH3_USBH3_PWR IOMUX_PAD(0x410, 0x0E4, 4, __NA_, 0, NO_PAD_CTRL) -#define MX53_PAD_CSI0_DAT9__I2C1_SCL IOMUX_PAD(0x410, 0x0E4, 5 | IOMUX_CONFIG_SION, 0x814, 0, NO_PAD_CTRL) +#define MX53_PAD_CSI0_DAT9__I2C1_SCL IOMUX_PAD(0x410, 0x0E4, 5 | IOMUX_CONFIG_SION, 0x814, 0, MX53_I2C_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__EMI_EMI_DEBUG_38 IOMUX_PAD(0x410, 0x0E4, 6, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__TPIU_TRACE_6 IOMUX_PAD(0x410, 0x0E4, 7, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT10__IPU_CSI0_D_10 IOMUX_PAD(0x414, 0x0E8, 0, __NA_, 0, NO_PAD_CTRL) -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH v2 5/7] mx53-loco: add i2c support 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard ` (2 preceding siblings ...) 2012-02-27 8:20 ` [PATCH v2 4/7] i.MX53: enable pull up on I2C0 pins Eric Bénard @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 8:20 ` [PATCH v2 6/7] mx53-loco: add board revision support Eric Bénard ` (2 subsequent siblings) 6 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox and register mc34708 which is present on MCIMX53-START-R board Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/boards/freescale-mx53-loco/board.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c index dc930b6..66ff040 100644 --- a/arch/arm/boards/freescale-mx53-loco/board.c +++ b/arch/arm/boards/freescale-mx53-loco/board.c @@ -36,6 +36,9 @@ #include <mach/iim.h> #include <mach/imx5.h> +#include <i2c/i2c.h> +#include <mfd/mc34708.h> + #include <asm/armlinux.h> #include <io.h> #include <asm/mmu.h> @@ -88,6 +91,16 @@ static struct pad_desc loco_pads[] = { MX53_PAD_EIM_DA11__GPIO3_11, /* SD3_WP */ MX53_PAD_EIM_DA12__GPIO3_12, + + /* I2C0 */ + MX53_PAD_CSI0_DAT8__I2C1_SDA, + MX53_PAD_CSI0_DAT9__I2C1_SCL, +}; + +static struct i2c_board_info i2c_devices[] = { + { + I2C_BOARD_INFO("mc34708-i2c", 0x08), + }, }; static int loco_mem_init(void) @@ -131,6 +144,8 @@ static int loco_devices_init(void) imx53_add_fec(&fec_info); imx53_add_mmc0(&loco_sd1_data); imx53_add_mmc2(&loco_sd3_data); + i2c_register_board_info(0, i2c_devices, ARRAY_SIZE(i2c_devices)); + imx53_add_i2c0(NULL); loco_fec_reset(); -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH v2 6/7] mx53-loco: add board revision support 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard ` (3 preceding siblings ...) 2012-02-27 8:20 ` [PATCH v2 5/7] mx53-loco: add i2c support Eric Bénard @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 15:40 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-27 8:20 ` [PATCH v2 7/7] mx53-loco: update defconfig Eric Bénard 2012-02-27 18:59 ` [PATCH v2 1/7] add i2c clock support Sascha Hauer 6 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox - this is taken from freescale-mx35-3-stack/3stack.c and allows this board to run Freescale's kernel which relies on the system revision to configure the correct PMIC. - On rev0 boards (with DA9053), the log is : detected i.MX53 rev 2.1 MCIMX53-START board 1.0 On newer boards (rev A or B with MC34708), the log is : mc34708-i2c@mc34708-i2c0: MC34708 ID: 0x0014 detected i.MX53 rev 2.1 MCIMX53-START-R board 1.0 rev B Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/boards/freescale-mx53-loco/board.c | 51 +++++++++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c index 66ff040..6c0e1d1 100644 --- a/arch/arm/boards/freescale-mx53-loco/board.c +++ b/arch/arm/boards/freescale-mx53-loco/board.c @@ -103,6 +103,31 @@ static struct i2c_board_info i2c_devices[] = { }, }; +/* + * Revision to be passed to kernel. The kernel provided + * by freescale relies on this. + * + * C --> CPU type + * S --> Silicon revision + * B --> Board rev + * + * 31 20 16 12 8 4 0 + * | Cmaj | Cmin | B | Smaj | Smin| + * + * e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2 +*/ +static unsigned int loco_system_rev = 0x00053000; + +static void set_silicon_rev( int rev) +{ + loco_system_rev = loco_system_rev | (rev & 0xFF); +} + +static void set_board_rev(int rev) +{ + loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8; +} + static int loco_mem_init(void) { arm_add_mem_device("ram0", 0x70000000, SZ_512M); @@ -149,6 +174,8 @@ static int loco_devices_init(void) loco_fec_reset(); + set_silicon_rev(imx_silicon_revision()); + armlinux_set_bootparams((void *)0x70000100); armlinux_set_architecture(MACH_TYPE_MX53_LOCO); @@ -177,3 +204,27 @@ static int loco_console_init(void) } console_initcall(loco_console_init); + +static int loco_pmic_init(void) +{ + struct mc34708 *mc34708; + int rev; + + mc34708 = mc34708_get(); + if (!mc34708) { + /* so we have a DA9053 based board */ + printf("MCIMX53-START board 1.0\n"); + armlinux_set_revision(loco_system_rev); + return 0; + } + + /* get the board revision from fuse */ + rev = readl(MX53_IIM_BASE_ADDR + 0x878); + set_board_rev(rev); + printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' ); + armlinux_set_revision(loco_system_rev); + + return 0; +} + +late_initcall(loco_pmic_init); -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* Re: [PATCH v2 6/7] mx53-loco: add board revision support 2012-02-27 8:20 ` [PATCH v2 6/7] mx53-loco: add board revision support Eric Bénard @ 2012-02-27 15:40 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-27 18:58 ` Sascha Hauer 0 siblings, 1 reply; 28+ messages in thread From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-27 15:40 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox On 09:20 Mon 27 Feb , Eric Bénard wrote: > - this is taken from freescale-mx35-3-stack/3stack.c and allows > this board to run Freescale's kernel which relies on the system > revision to configure the correct PMIC. > > - On rev0 boards (with DA9053), the log is : > detected i.MX53 rev 2.1 > MCIMX53-START board 1.0 > > On newer boards (rev A or B with MC34708), the log is : > mc34708-i2c@mc34708-i2c0: MC34708 ID: 0x0014 > detected i.MX53 rev 2.1 > MCIMX53-START-R board 1.0 rev B > > Signed-off-by: Eric Bénard <eric@eukrea.com> > --- > arch/arm/boards/freescale-mx53-loco/board.c | 51 +++++++++++++++++++++++++++ > 1 files changed, 51 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c > index 66ff040..6c0e1d1 100644 > --- a/arch/arm/boards/freescale-mx53-loco/board.c > +++ b/arch/arm/boards/freescale-mx53-loco/board.c > @@ -103,6 +103,31 @@ static struct i2c_board_info i2c_devices[] = { > }, > }; > > +/* > + * Revision to be passed to kernel. The kernel provided > + * by freescale relies on this. > + * > + * C --> CPU type > + * S --> Silicon revision > + * B --> Board rev > + * > + * 31 20 16 12 8 4 0 > + * | Cmaj | Cmin | B | Smaj | Smin| > + * > + * e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2 > +*/ > +static unsigned int loco_system_rev = 0x00053000; > + > +static void set_silicon_rev( int rev) > +{ > + loco_system_rev = loco_system_rev | (rev & 0xFF); > +} > + > +static void set_board_rev(int rev) > +{ > + loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8; > +} > + > static int loco_mem_init(void) > { > arm_add_mem_device("ram0", 0x70000000, SZ_512M); > @@ -149,6 +174,8 @@ static int loco_devices_init(void) > > loco_fec_reset(); > > + set_silicon_rev(imx_silicon_revision()); > + > armlinux_set_bootparams((void *)0x70000100); > armlinux_set_architecture(MACH_TYPE_MX53_LOCO); > > @@ -177,3 +204,27 @@ static int loco_console_init(void) > } > > console_initcall(loco_console_init); > + > +static int loco_pmic_init(void) > +{ > + struct mc34708 *mc34708; > + int rev; > + > + mc34708 = mc34708_get(); > + if (!mc34708) { > + /* so we have a DA9053 based board */ > + printf("MCIMX53-START board 1.0\n"); > + armlinux_set_revision(loco_system_rev); > + return 0; > + } here I still don't like the idea to check the pointer check the file exist is the rigght way Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* Re: [PATCH v2 6/7] mx53-loco: add board revision support 2012-02-27 15:40 ` Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-27 18:58 ` Sascha Hauer 0 siblings, 0 replies; 28+ messages in thread From: Sascha Hauer @ 2012-02-27 18:58 UTC (permalink / raw) To: Jean-Christophe PLAGNIOL-VILLARD; +Cc: barebox On Mon, Feb 27, 2012 at 04:40:23PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote: > On 09:20 Mon 27 Feb , Eric Bénard wrote: > > - this is taken from freescale-mx35-3-stack/3stack.c and allows > > this board to run Freescale's kernel which relies on the system > > revision to configure the correct PMIC. > > > > - On rev0 boards (with DA9053), the log is : > > detected i.MX53 rev 2.1 > > MCIMX53-START board 1.0 > > > > On newer boards (rev A or B with MC34708), the log is : > > mc34708-i2c@mc34708-i2c0: MC34708 ID: 0x0014 > > detected i.MX53 rev 2.1 > > MCIMX53-START-R board 1.0 rev B > > > > Signed-off-by: Eric Bénard <eric@eukrea.com> > > --- > > arch/arm/boards/freescale-mx53-loco/board.c | 51 +++++++++++++++++++++++++++ > > 1 files changed, 51 insertions(+), 0 deletions(-) > > > > diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c > > index 66ff040..6c0e1d1 100644 > > --- a/arch/arm/boards/freescale-mx53-loco/board.c > > +++ b/arch/arm/boards/freescale-mx53-loco/board.c > > @@ -103,6 +103,31 @@ static struct i2c_board_info i2c_devices[] = { > > }, > > }; > > > > +/* > > + * Revision to be passed to kernel. The kernel provided > > + * by freescale relies on this. > > + * > > + * C --> CPU type > > + * S --> Silicon revision > > + * B --> Board rev > > + * > > + * 31 20 16 12 8 4 0 > > + * | Cmaj | Cmin | B | Smaj | Smin| > > + * > > + * e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2 > > +*/ > > +static unsigned int loco_system_rev = 0x00053000; > > + > > +static void set_silicon_rev( int rev) > > +{ > > + loco_system_rev = loco_system_rev | (rev & 0xFF); > > +} > > + > > +static void set_board_rev(int rev) > > +{ > > + loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8; > > +} > > + > > static int loco_mem_init(void) > > { > > arm_add_mem_device("ram0", 0x70000000, SZ_512M); > > @@ -149,6 +174,8 @@ static int loco_devices_init(void) > > > > loco_fec_reset(); > > > > + set_silicon_rev(imx_silicon_revision()); > > + > > armlinux_set_bootparams((void *)0x70000100); > > armlinux_set_architecture(MACH_TYPE_MX53_LOCO); > > > > @@ -177,3 +204,27 @@ static int loco_console_init(void) > > } > > > > console_initcall(loco_console_init); > > + > > +static int loco_pmic_init(void) > > +{ > > + struct mc34708 *mc34708; > > + int rev; > > + > > + mc34708 = mc34708_get(); > > + if (!mc34708) { > > + /* so we have a DA9053 based board */ > > + printf("MCIMX53-START board 1.0\n"); > > + armlinux_set_revision(loco_system_rev); > > + return 0; > > + } > here I still don't like the idea to check the pointer > > check the file exist is the rigght way I don't agree. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* [PATCH v2 7/7] mx53-loco: update defconfig 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard ` (4 preceding siblings ...) 2012-02-27 8:20 ` [PATCH v2 6/7] mx53-loco: add board revision support Eric Bénard @ 2012-02-27 8:20 ` Eric Bénard 2012-02-27 18:59 ` [PATCH v2 1/7] add i2c clock support Sascha Hauer 6 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-27 8:20 UTC (permalink / raw) To: barebox Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/configs/freescale_mx53_loco_defconfig | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/arm/configs/freescale_mx53_loco_defconfig b/arch/arm/configs/freescale_mx53_loco_defconfig index b4e872d..bd2bdbe 100644 --- a/arch/arm/configs/freescale_mx53_loco_defconfig +++ b/arch/arm/configs/freescale_mx53_loco_defconfig @@ -21,7 +21,6 @@ CONFIG_DEBUG_INFO=y CONFIG_CMD_EDIT=y CONFIG_CMD_SLEEP=y CONFIG_CMD_SAVEENV=y -CONFIG_CMD_LOADENV=y CONFIG_CMD_EXPORT=y CONFIG_CMD_PRINTENV=y CONFIG_CMD_READLINE=y @@ -46,6 +45,7 @@ CONFIG_CMD_MAGICVAR=y CONFIG_CMD_MAGICVAR_HELP=y CONFIG_CMD_GPIO=y CONFIG_CMD_UNCOMPRESS=y +CONFIG_CMD_I2C=y CONFIG_NET=y CONFIG_NET_DHCP=y CONFIG_NET_NFS=y @@ -55,9 +55,12 @@ CONFIG_NET_TFTP_PUSH=y CONFIG_NET_NETCONSOLE=y CONFIG_DRIVER_NET_FEC_IMX=y # CONFIG_SPI is not set +CONFIG_I2C=y +CONFIG_I2C_IMX=y CONFIG_MCI=y CONFIG_MCI_STARTUP=y CONFIG_MCI_IMX_ESDHC=y +CONFIG_I2C_MC34708=y CONFIG_FS_FAT=y CONFIG_FS_FAT_WRITE=y CONFIG_FS_FAT_LFN=y -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* Re: [PATCH v2 1/7] add i2c clock support 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard ` (5 preceding siblings ...) 2012-02-27 8:20 ` [PATCH v2 7/7] mx53-loco: update defconfig Eric Bénard @ 2012-02-27 18:59 ` Sascha Hauer 6 siblings, 0 replies; 28+ messages in thread From: Sascha Hauer @ 2012-02-27 18:59 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox Applied this series. Thanks Sascha On Mon, Feb 27, 2012 at 09:20:07AM +0100, Eric Bénard wrote: > Signed-off-by: Eric Bénard <eric@eukrea.com> > --- > arch/arm/mach-imx/speed-imx53.c | 26 ++++++++++++++++++++++++++ > 1 files changed, 26 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/mach-imx/speed-imx53.c b/arch/arm/mach-imx/speed-imx53.c > index 0d6ac24..a2385fa 100644 > --- a/arch/arm/mach-imx/speed-imx53.c > +++ b/arch/arm/mach-imx/speed-imx53.c > @@ -169,6 +169,31 @@ unsigned long imx_get_fecclk(void) > return imx_get_ipgclk(); > } > > +static unsigned long imx_get_ipg_perclk(void) > +{ > + u32 reg; > + > + reg = ccm_readl(MX5_CCM_CBCDR); > + if (!(reg & MX5_CCM_CBCDR_PERIPH_CLK_SEL)) > + return pll2_sw_get_rate(); > + reg = ccm_readl(MX5_CCM_CBCMR); > + switch ((reg & MX5_CCM_CBCMR_PERIPH_CLK_SEL_MASK) >> > + MX5_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET) { > + case 0: > + return pll1_main_get_rate(); > + case 1: > + return pll3_sw_get_rate(); > + /* case 2: > + TODO : LP_APM */ > + } > + return 0; > +} > + > +unsigned long imx_get_i2cclk(void) > +{ > + return imx_get_ipg_perclk(); > +} > + > unsigned long imx_get_mmcclk(void) > { > u32 reg, prediv, podf, rate; > @@ -201,4 +226,5 @@ void imx_dump_clocks(void) > printf("ipg: %ld\n", imx_get_ipgclk()); > printf("fec: %ld\n", imx_get_fecclk()); > printf("gpt: %ld\n", imx_get_gptclk()); > + printf("i2c: %ld\n", imx_get_i2cclk()); > } > -- > 1.7.7.6 > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* [PATCH 4/7] i.MX53: enable pull up on I2C0 pins 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard 2012-02-21 0:27 ` [PATCH 2/7] mfd: add mc34708 driver Eric Bénard 2012-02-21 0:27 ` [PATCH 3/7] i.MX53: add silicn revision functions Eric Bénard @ 2012-02-21 0:27 ` Eric Bénard 2012-02-21 0:27 ` [PATCH 5/7] mx53-loco: add i2c support Eric Bénard ` (2 subsequent siblings) 5 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw) To: barebox this allows I2C to work on boards which don't have external pull up (like LOCO board) Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/mach-imx/include/mach/iomux-mx53.h | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-imx/include/mach/iomux-mx53.h b/arch/arm/mach-imx/include/mach/iomux-mx53.h index 527f8fe..ac94deb 100644 --- a/arch/arm/mach-imx/include/mach/iomux-mx53.h +++ b/arch/arm/mach-imx/include/mach/iomux-mx53.h @@ -30,7 +30,9 @@ #define MX53_SDHC_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PKE | PAD_CTL_PUE | \ PAD_CTL_PUS_47K_UP | PAD_CTL_DSE_HIGH | \ PAD_CTL_SRE_FAST) - +#define MX53_I2C_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PKE | PAD_CTL_PUE | \ + PAD_CTL_PUS_22K_UP | PAD_CTL_DSE_HIGH | \ + PAD_CTL_SRE_FAST) #define MX53_PAD_GPIO_19__KPP_COL_5 IOMUX_PAD(0x348, 0x020, 0, 0x840, 0, NO_PAD_CTRL) #define MX53_PAD_GPIO_19__GPIO4_5 IOMUX_PAD(0x348, 0x020, 1, __NA_, 0, NO_PAD_CTRL) @@ -377,7 +379,7 @@ #define MX53_PAD_CSI0_DAT8__KPP_COL_7 IOMUX_PAD(0x40C, 0x0E0, 2, 0x848, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__ECSPI2_SCLK IOMUX_PAD(0x40C, 0x0E0, 3, 0x7B8, 1, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__USBOH3_USBH3_OC IOMUX_PAD(0x40C, 0x0E0, 4, __NA_, 0, NO_PAD_CTRL) -#define MX53_PAD_CSI0_DAT8__I2C1_SDA IOMUX_PAD(0x40C, 0x0E0, 5 | IOMUX_CONFIG_SION, 0x818, 0, NO_PAD_CTRL) +#define MX53_PAD_CSI0_DAT8__I2C1_SDA IOMUX_PAD(0x40C, 0x0E0, 5 | IOMUX_CONFIG_SION, 0x818, 0, MX53_I2C_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__EMI_EMI_DEBUG_37 IOMUX_PAD(0x40C, 0x0E0, 6, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT8__TPIU_TRACE_5 IOMUX_PAD(0x40C, 0x0E0, 7, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__IPU_CSI0_D_9 IOMUX_PAD(0x410, 0x0E4, 0, __NA_, 0, NO_PAD_CTRL) @@ -385,7 +387,7 @@ #define MX53_PAD_CSI0_DAT9__KPP_ROW_7 IOMUX_PAD(0x410, 0x0E4, 2, 0x854, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__ECSPI2_MOSI IOMUX_PAD(0x410, 0x0E4, 3, 0x7C0, 1, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__USBOH3_USBH3_PWR IOMUX_PAD(0x410, 0x0E4, 4, __NA_, 0, NO_PAD_CTRL) -#define MX53_PAD_CSI0_DAT9__I2C1_SCL IOMUX_PAD(0x410, 0x0E4, 5 | IOMUX_CONFIG_SION, 0x814, 0, NO_PAD_CTRL) +#define MX53_PAD_CSI0_DAT9__I2C1_SCL IOMUX_PAD(0x410, 0x0E4, 5 | IOMUX_CONFIG_SION, 0x814, 0, MX53_I2C_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__EMI_EMI_DEBUG_38 IOMUX_PAD(0x410, 0x0E4, 6, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT9__TPIU_TRACE_6 IOMUX_PAD(0x410, 0x0E4, 7, __NA_, 0, NO_PAD_CTRL) #define MX53_PAD_CSI0_DAT10__IPU_CSI0_D_10 IOMUX_PAD(0x414, 0x0E8, 0, __NA_, 0, NO_PAD_CTRL) -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH 5/7] mx53-loco: add i2c support 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard ` (2 preceding siblings ...) 2012-02-21 0:27 ` [PATCH 4/7] i.MX53: enable pull up on I2C0 pins Eric Bénard @ 2012-02-21 0:27 ` Eric Bénard 2012-02-21 0:27 ` [PATCH 6/7] mx53-loco: add board revision support Eric Bénard 2012-02-21 0:27 ` [PATCH 7/7] mx53-loco: update defconfig Eric Bénard 5 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw) To: barebox and register mc34708 which is present on MCIMX53-START-R board Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/boards/freescale-mx53-loco/board.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c index dc930b6..66ff040 100644 --- a/arch/arm/boards/freescale-mx53-loco/board.c +++ b/arch/arm/boards/freescale-mx53-loco/board.c @@ -36,6 +36,9 @@ #include <mach/iim.h> #include <mach/imx5.h> +#include <i2c/i2c.h> +#include <mfd/mc34708.h> + #include <asm/armlinux.h> #include <io.h> #include <asm/mmu.h> @@ -88,6 +91,16 @@ static struct pad_desc loco_pads[] = { MX53_PAD_EIM_DA11__GPIO3_11, /* SD3_WP */ MX53_PAD_EIM_DA12__GPIO3_12, + + /* I2C0 */ + MX53_PAD_CSI0_DAT8__I2C1_SDA, + MX53_PAD_CSI0_DAT9__I2C1_SCL, +}; + +static struct i2c_board_info i2c_devices[] = { + { + I2C_BOARD_INFO("mc34708-i2c", 0x08), + }, }; static int loco_mem_init(void) @@ -131,6 +144,8 @@ static int loco_devices_init(void) imx53_add_fec(&fec_info); imx53_add_mmc0(&loco_sd1_data); imx53_add_mmc2(&loco_sd3_data); + i2c_register_board_info(0, i2c_devices, ARRAY_SIZE(i2c_devices)); + imx53_add_i2c0(NULL); loco_fec_reset(); -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* [PATCH 6/7] mx53-loco: add board revision support 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard ` (3 preceding siblings ...) 2012-02-21 0:27 ` [PATCH 5/7] mx53-loco: add i2c support Eric Bénard @ 2012-02-21 0:27 ` Eric Bénard 2012-02-21 3:50 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 0:27 ` [PATCH 7/7] mx53-loco: update defconfig Eric Bénard 5 siblings, 1 reply; 28+ messages in thread From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw) To: barebox - this is taken from freescale-mx35-3-stack/3stack.c and allows this board to run Freescale's kernel which relies on the system revision to configure the correct PMIC. - On rev0 boards (with DA9053), the log is : detected i.MX53 rev 2.1 MCIMX53-START board 1.0 On newer boards (rev A or B with MC34708), the log is : mc34708-i2c@mc34708-i2c0: MC34708 ID: 0x0014 detected i.MX53 rev 2.1 MCIMX53-START-R board 1.0 rev B Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/boards/freescale-mx53-loco/board.c | 51 +++++++++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c index 66ff040..6c0e1d1 100644 --- a/arch/arm/boards/freescale-mx53-loco/board.c +++ b/arch/arm/boards/freescale-mx53-loco/board.c @@ -103,6 +103,31 @@ static struct i2c_board_info i2c_devices[] = { }, }; +/* + * Revision to be passed to kernel. The kernel provided + * by freescale relies on this. + * + * C --> CPU type + * S --> Silicon revision + * B --> Board rev + * + * 31 20 16 12 8 4 0 + * | Cmaj | Cmin | B | Smaj | Smin| + * + * e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2 +*/ +static unsigned int loco_system_rev = 0x00053000; + +static void set_silicon_rev( int rev) +{ + loco_system_rev = loco_system_rev | (rev & 0xFF); +} + +static void set_board_rev(int rev) +{ + loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8; +} + static int loco_mem_init(void) { arm_add_mem_device("ram0", 0x70000000, SZ_512M); @@ -149,6 +174,8 @@ static int loco_devices_init(void) loco_fec_reset(); + set_silicon_rev(imx_silicon_revision()); + armlinux_set_bootparams((void *)0x70000100); armlinux_set_architecture(MACH_TYPE_MX53_LOCO); @@ -177,3 +204,27 @@ static int loco_console_init(void) } console_initcall(loco_console_init); + +static int loco_pmic_init(void) +{ + struct mc34708 *mc34708; + int rev; + + mc34708 = mc34708_get(); + if (!mc34708) { + /* so we have a DA9053 based board */ + printf("MCIMX53-START board 1.0\n"); + armlinux_set_revision(loco_system_rev); + return 0; + } + + /* get the board revision from fuse */ + rev = readl(MX53_IIM_BASE_ADDR + 0x878); + set_board_rev(rev); + printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' ); + armlinux_set_revision(loco_system_rev); + + return 0; +} + +late_initcall(loco_pmic_init); -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
* Re: [PATCH 6/7] mx53-loco: add board revision support 2012-02-21 0:27 ` [PATCH 6/7] mx53-loco: add board revision support Eric Bénard @ 2012-02-21 3:50 ` Jean-Christophe PLAGNIOL-VILLARD 0 siblings, 0 replies; 28+ messages in thread From: Jean-Christophe PLAGNIOL-VILLARD @ 2012-02-21 3:50 UTC (permalink / raw) To: Eric Bénard; +Cc: barebox On 01:27 Tue 21 Feb , Eric Bénard wrote: > - this is taken from freescale-mx35-3-stack/3stack.c and allows > this board to run Freescale's kernel which relies on the system > revision to configure the correct PMIC. > > - On rev0 boards (with DA9053), the log is : > detected i.MX53 rev 2.1 > MCIMX53-START board 1.0 > > On newer boards (rev A or B with MC34708), the log is : > mc34708-i2c@mc34708-i2c0: MC34708 ID: 0x0014 > detected i.MX53 rev 2.1 > MCIMX53-START-R board 1.0 rev B > > Signed-off-by: Eric Bénard <eric@eukrea.com> > --- > arch/arm/boards/freescale-mx53-loco/board.c | 51 +++++++++++++++++++++++++++ > 1 files changed, 51 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/boards/freescale-mx53-loco/board.c b/arch/arm/boards/freescale-mx53-loco/board.c > index 66ff040..6c0e1d1 100644 > --- a/arch/arm/boards/freescale-mx53-loco/board.c > +++ b/arch/arm/boards/freescale-mx53-loco/board.c > @@ -103,6 +103,31 @@ static struct i2c_board_info i2c_devices[] = { > }, > }; > > +/* > + * Revision to be passed to kernel. The kernel provided > + * by freescale relies on this. > + * > + * C --> CPU type > + * S --> Silicon revision > + * B --> Board rev > + * > + * 31 20 16 12 8 4 0 > + * | Cmaj | Cmin | B | Smaj | Smin| > + * > + * e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2 > +*/ > +static unsigned int loco_system_rev = 0x00053000; > + > +static void set_silicon_rev( int rev) > +{ > + loco_system_rev = loco_system_rev | (rev & 0xFF); > +} > + > +static void set_board_rev(int rev) > +{ > + loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8; > +} > + > static int loco_mem_init(void) > { > arm_add_mem_device("ram0", 0x70000000, SZ_512M); > @@ -149,6 +174,8 @@ static int loco_devices_init(void) > > loco_fec_reset(); > > + set_silicon_rev(imx_silicon_revision()); > + > armlinux_set_bootparams((void *)0x70000100); > armlinux_set_architecture(MACH_TYPE_MX53_LOCO); > > @@ -177,3 +204,27 @@ static int loco_console_init(void) > } > > console_initcall(loco_console_init); > + > +static int loco_pmic_init(void) > +{ > + struct mc34708 *mc34708; > + int rev; > + > + mc34708 = mc34708_get(); please check the file exist > + if (!mc34708) { > + /* so we have a DA9053 based board */ > + printf("MCIMX53-START board 1.0\n"); > + armlinux_set_revision(loco_system_rev); please do not duplicate it > + return 0; > + } > + > + /* get the board revision from fuse */ > + rev = readl(MX53_IIM_BASE_ADDR + 0x878); > + set_board_rev(rev); > + printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' ); > + armlinux_set_revision(loco_system_rev); > + > + return 0; > +} Best Regards, J. _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply [flat|nested] 28+ messages in thread
* [PATCH 7/7] mx53-loco: update defconfig 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard ` (4 preceding siblings ...) 2012-02-21 0:27 ` [PATCH 6/7] mx53-loco: add board revision support Eric Bénard @ 2012-02-21 0:27 ` Eric Bénard 5 siblings, 0 replies; 28+ messages in thread From: Eric Bénard @ 2012-02-21 0:27 UTC (permalink / raw) To: barebox Signed-off-by: Eric Bénard <eric@eukrea.com> --- arch/arm/configs/freescale_mx53_loco_defconfig | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/arm/configs/freescale_mx53_loco_defconfig b/arch/arm/configs/freescale_mx53_loco_defconfig index b4e872d..bd2bdbe 100644 --- a/arch/arm/configs/freescale_mx53_loco_defconfig +++ b/arch/arm/configs/freescale_mx53_loco_defconfig @@ -21,7 +21,6 @@ CONFIG_DEBUG_INFO=y CONFIG_CMD_EDIT=y CONFIG_CMD_SLEEP=y CONFIG_CMD_SAVEENV=y -CONFIG_CMD_LOADENV=y CONFIG_CMD_EXPORT=y CONFIG_CMD_PRINTENV=y CONFIG_CMD_READLINE=y @@ -46,6 +45,7 @@ CONFIG_CMD_MAGICVAR=y CONFIG_CMD_MAGICVAR_HELP=y CONFIG_CMD_GPIO=y CONFIG_CMD_UNCOMPRESS=y +CONFIG_CMD_I2C=y CONFIG_NET=y CONFIG_NET_DHCP=y CONFIG_NET_NFS=y @@ -55,9 +55,12 @@ CONFIG_NET_TFTP_PUSH=y CONFIG_NET_NETCONSOLE=y CONFIG_DRIVER_NET_FEC_IMX=y # CONFIG_SPI is not set +CONFIG_I2C=y +CONFIG_I2C_IMX=y CONFIG_MCI=y CONFIG_MCI_STARTUP=y CONFIG_MCI_IMX_ESDHC=y +CONFIG_I2C_MC34708=y CONFIG_FS_FAT=y CONFIG_FS_FAT_WRITE=y CONFIG_FS_FAT_LFN=y -- 1.7.7.6 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox ^ permalink raw reply related [flat|nested] 28+ messages in thread
end of thread, other threads:[~2012-02-27 18:59 UTC | newest] Thread overview: 28+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2012-02-21 0:27 [PATCH 1/7] add i2c clock support Eric Bénard 2012-02-21 0:27 ` [PATCH 2/7] mfd: add mc34708 driver Eric Bénard 2012-02-21 3:48 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 7:03 ` Eric Bénard 2012-02-21 13:03 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 13:22 ` Eric Bénard 2012-02-21 14:10 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 15:35 ` Eric Bénard 2012-02-21 15:38 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 20:45 ` Sascha Hauer 2012-02-21 21:09 ` Marc Reilly 2012-02-21 0:27 ` [PATCH 3/7] i.MX53: add silicn revision functions Eric Bénard 2012-02-22 7:33 ` Sascha Hauer 2012-02-27 8:20 ` [PATCH v2 1/7] add i2c clock support Eric Bénard 2012-02-27 8:20 ` [PATCH v2 2/7] mfd: add mc34708 driver Eric Bénard 2012-02-27 8:20 ` [PATCH v2 3/7] i.MX53: add silicon revision functions Eric Bénard 2012-02-27 8:20 ` [PATCH v2 4/7] i.MX53: enable pull up on I2C0 pins Eric Bénard 2012-02-27 8:20 ` [PATCH v2 5/7] mx53-loco: add i2c support Eric Bénard 2012-02-27 8:20 ` [PATCH v2 6/7] mx53-loco: add board revision support Eric Bénard 2012-02-27 15:40 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-27 18:58 ` Sascha Hauer 2012-02-27 8:20 ` [PATCH v2 7/7] mx53-loco: update defconfig Eric Bénard 2012-02-27 18:59 ` [PATCH v2 1/7] add i2c clock support Sascha Hauer 2012-02-21 0:27 ` [PATCH 4/7] i.MX53: enable pull up on I2C0 pins Eric Bénard 2012-02-21 0:27 ` [PATCH 5/7] mx53-loco: add i2c support Eric Bénard 2012-02-21 0:27 ` [PATCH 6/7] mx53-loco: add board revision support Eric Bénard 2012-02-21 3:50 ` Jean-Christophe PLAGNIOL-VILLARD 2012-02-21 0:27 ` [PATCH 7/7] mx53-loco: update defconfig Eric Bénard
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