[U-Boot] [PATCH 03/12] imx:mx6slevk implement power init board

[Stefano Babic]

Hi Peng,

On 09/01/2015 09:59, Peng Fan wrote:
> Implement power_init_board and related I2C interface configuration.
> 
> After adding this, uboot can successfully detect and configure pmic.
> 
> "
> U-Boot 2015.01-rc4-00110-g5697113-dirty (Jan 08 2015 - 21:06:44)
> 
> CPU:   Freescale i.MX6SL rev1.0 at 396 MHz
> Reset cause: POR
> Board: MX6SLEVK
> I2C:   ready
> DRAM:  1 GiB
> PMIC:  PFUZE100 ID=0x10
> MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
> "
> 
> Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
> ---
>  board/freescale/mx6slevk/mx6slevk.c | 47 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
> 
> diff --git a/board/freescale/mx6slevk/mx6slevk.c b/board/freescale/mx6slevk/mx6slevk.c
> index 838ea6c..f74b237 100644
> --- a/board/freescale/mx6slevk/mx6slevk.c
> +++ b/board/freescale/mx6slevk/mx6slevk.c
> @@ -13,13 +13,18 @@
>  #include <asm/arch/sys_proto.h>
>  #include <asm/gpio.h>
>  #include <asm/imx-common/iomux-v3.h>
> +#include <asm/imx-common/mxc_i2c.h>
>  #include <asm/imx-common/spi.h>
>  #include <asm/io.h>
>  #include <linux/sizes.h>
>  #include <common.h>
>  #include <fsl_esdhc.h>
> +#include <i2c.h>
>  #include <mmc.h>
>  #include <netdev.h>
> +#include <power/pmic.h>
> +#include <power/pfuze100_pmic.h>
> +#include "../common/pfuze.h"
>  #include <usb.h>
>  #include <usb/ehci-fsl.h>
>  
> @@ -40,6 +45,11 @@ DECLARE_GLOBAL_DATA_PTR;
>  #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
>  		      PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
>  
> +#define I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |		\
> +		      PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |	\
> +		      PAD_CTL_DSE_40ohm | PAD_CTL_HYS |		\
> +		      PAD_CTL_ODE | PAD_CTL_SRE_FAST)
> +
>  #define ETH_PHY_RESET	IMX_GPIO_NR(4, 21)
>  
>  int dram_init(void)
> @@ -221,6 +231,39 @@ int board_mmc_init(bd_t *bis)
>  	return 0;
>  }
>  
> +#ifdef CONFIG_SYS_I2C_MXC
> +#define PC	MUX_PAD_CTRL(I2C_PAD_CTRL)
> +/* I2C1 for PMIC */
> +struct i2c_pads_info i2c_pad_info1 = {
> +	.sda = {
> +		.i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC,
> +		.gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC,
> +		.gp = IMX_GPIO_NR(3, 13),
> +	},
> +	.scl = {
> +		.i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC,
> +		.gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC,
> +		.gp = IMX_GPIO_NR(3, 12),
> +	},
> +};
> +
> +int power_init_board(void)
> +{
> +	struct pmic *p;
> +	unsigned int ret;
> +
> +	p = pfuze_common_init(I2C_PMIC);
> +	if (!p)
> +		return -ENODEV;
> +
> +	ret = pfuze_mode_init(p, APS_PFM);
> +	if (ret < 0)
> +		return -EIO;
> +
> +	return 0;
> +}
> +#endif
> +
>  #ifdef CONFIG_FEC_MXC
>  int board_eth_init(bd_t *bis)
>  {
> @@ -297,6 +340,10 @@ int board_init(void)
>  	/* address of boot parameters */
>  	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
>  
> +#ifdef CONFIG_SYS_I2C_MXC
> +	setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
> +#endif
> +
>  #ifdef	CONFIG_FEC_MXC
>  	setup_fec();
>  #endif
> 

Patches are quite orthogonal: patches 1-3 have nothing to do with the
subject of the patchset (LDO bypass) and can flawlessly be applied.

Best regards,
Stefano Babic

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