[U-Boot] [PATCH v3] imx: support i.MX8QM ROM 7720 a1 board

[Oliver Graute <oliver.graute@kococonnector.com>]

On 02/09/19, Peng Fan wrote:
> > Subject: [PATCH v3] imx: support i.MX8QM ROM 7720 a1 board
> > 
> > +echo "ATF_LOAD_ADDR=$ATF_LOAD_ADDR" >&2 echo
> > +"BL33_LOAD_ADDR=$BL33_LOAD_ADDR" >&2
> > +
> 
> This is no needed.
> 

ok I`ll remove it

> > +config SYS_VENDOR
> > +	default "freescale"
> 
> This board is not from nxp(freescale). Please correct vendor.

yes vendor is advantech, I'll change that in next version
Then I need to move all files into the board/advantech folder?
> 
> > +Copy the following binaries to iMX8QM folder:
> > +
> > +$ cp imx-atf/build/imx8qm/release/bl31.bin .
> > +$ cp u-boot/u-boot.bin .
> > +
> > +Copy the following firmwares U-Boot folder :
> > +
> > +$ cp firmware-imx-8.0/firmware/seco/mx8qm-ahab-container.img .
> > +$ cp imx-sc-firmware-1.1/mx8qm-val-scfw-tcm.bin scfw_tcm.bin
> > +
> > +$ make SOC=iMX8QM flash_linux_m4
> 
> flash_linux_m4 is not a valid build target in U-Boot.

yes indeed but this is the build target in the imx-mkimage repo. Which I
currently need to build the complete bootstream with ATF and scu.

> > SC_PM_PW_MODE_ON);
> > +	if (ret)
> > +		return ret;
> > +
> > +	ret = sc_pm_set_clock_rate(-1, SC_R_UART_0, 2, &rate);
> > +	if (ret)
> > +		return ret;
> > +
> > +	/* Enable UART0 clock root */
> > +	ret = sc_pm_clock_enable(-1, SC_R_UART_0, 2, true, false);
> > +	if (ret)
> > +		return ret;
> 
> Please use sc_pm_setup_uart

ok
> 
> > +
> > +	setup_iomux_uart();
> > +
> > +	sc_pm_set_resource_power_mode(-1, SC_R_DC_0,
> > SC_PM_PW_MODE_ON);
> 
> Why power up DC_0? Should not kernel do it by itself?

Without this change the kernel is stucked during the boot. So currently
the kernel don't power up DC_0. So I would like to keep that until it is
fixed in the kernel.

> 
> > +#if IS_ENABLED(CONFIG_DM_GPIO)
> > +static void board_gpio_init(void)
> > +{
> > +	/* TODO */
> > +}
> > +#else
> > +static inline void board_gpio_init(void) {} #endif
> 
> If do nothing, please drop.

ok
> 
> > +
> > +#if IS_ENABLED(CONFIG_FEC_MXC)
> > +#include <miiphy.h>
> > +
> > +int board_phy_config(struct phy_device *phydev) { #ifdef
> > +CONFIG_FEC_ENABLE_MAX7322
> > +	u8 value;
> > +
> > +	/* This is needed to drive the pads to 1.8V instead of 1.5V */
> > +	i2c_set_bus_num(CONFIG_MAX7322_I2C_BUS);
> > +
> > +	if (!i2c_probe(CONFIG_MAX7322_I2C_ADDR)) {
> > +		/* Write 0x1 to enable O0 output, this device has no addr */
> > +		/* hence addr length is 0 */
> > +		value = 0x1;
> > +		if (i2c_write(CONFIG_MAX7322_I2C_ADDR, 0, 0, &value, 1))
> > +			printf("MAX7322 write failed\n");
> > +	} else {
> > +		printf("MAX7322 Not found\n");
> > +	}
> > +	mdelay(1);
> 
> Please use DM_I2C.

I don't get what you mean here.

> > +#ifdef CONFIG_OF_BOARD_SETUP
> > +int ft_board_setup(void *blob, bd_t *bd) {
> > +	return 0;
> > +}
> > +#endif
> 
> Drop it do nothing.

I got some linking erros if I try to remove that ft_board_setup.

> > +int board_mmc_getcd(struct mmc *mmc)
> > +{
> > +	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
> > +	int ret = 0;
> > +
> > +	switch (cfg->esdhc_base) {
> > +	case USDHC1_BASE_ADDR:
> > +		ret = 1;
> > +		break;
> > +	case USDHC2_BASE_ADDR:
> > +		ret = !gpio_get_value(USDHC1_CD_GPIO);
> > +		break;
> > +	case USDHC3_BASE_ADDR:
> > +		ret = !gpio_get_value(USDHC2_CD_GPIO);
> > +		break;
> > +	}
> > +
> > +	return ret;
> > +}
> 
> SPL_DM_MMC should help.

you mean I should turn on CONFIG_SPL_DM_MMC=y ?
> 
> > +
> > +#endif /* CONFIG_FSL_ESDHC */
> > +
> > +void spl_dram_init(void)
> > +{
> > +	/* do nothing for now */
> > +}
> 
> Drop
> 
> > +CONFIG_SYS_MALLOC_F_LEN=0x4000
> 
> This might not large enough, check how i.MX8QM MEK does in upstream.

should I use CONFIG_SYS_MALLOC_F_LEN=0x2000 ?

> > +CONFIG_DM_PCA953X=y
> > +CONFIG_DM_I2C=y
> > +CONFIG_SYS_I2C_IMX_LPI2C=y
> > +CONFIG_I2C_MUX=y
> > +CONFIG_I2C_MUX_PCA954x=y
> > +CONFIG_MISC=y
> > +CONFIG_DM_MMC=y
> > +CONFIG_FSL_ESDHC_IMX=y
> > +CONFIG_PHYLIB=y
> > +CONFIG_PHY_ADDR_ENABLE=y
> > +CONFIG_PHY_ATHEROS=y
> > +CONFIG_DM_ETH=y
> > +CONFIG_PHY_GIGE=y
> > +CONFIG_FEC_MXC_SHARE_MDIO=y
> > +CONFIG_FEC_MXC_MDIO_BASE=0x5B040000
> > +CONFIG_FEC_MXC=y
> > +CONFIG_MII=y
> > +CONFIG_PINCTRL=y
> > +CONFIG_SPL_PINCTRL=y
> > +CONFIG_PINCTRL_IMX8=y
> > +CONFIG_POWER_DOMAIN=y
> > +CONFIG_IMX8_POWER_DOMAIN=y
> > +CONFIG_DM_REGULATOR=y
> > +CONFIG_SPL_DM_REGULATOR=y
> > +CONFIG_DM_REGULATOR_FIXED=y
> > +CONFIG_DM_REGULATOR_GPIO=y
> > +CONFIG_SPL_DM_REGULATOR_GPIO=y
> > +CONFIG_DM_SERIAL=y
> > +CONFIG_FSL_LPUART=y
> > +CONFIG_SPL_TINY_MEMSET=y
> > +# CONFIG_EFI_LOADER is not set
> > +CONFIG_ARCH_MISC_INIT
> > +CONFIG_NET_RANDOM_ETHADDR=y
> > diff --git a/include/configs/imx8qm_rom7720.h
> > b/include/configs/imx8qm_rom7720.h
> > new file mode 100644
> > index 0000000000..a5c869b94e
> > --- /dev/null
> > +++ b/include/configs/imx8qm_rom7720.h
> 
> Please check how i.MX8QM MEK does in upstream.

I don't get what you mean here.

> 
> > +#define CONFIG_FSL_USDHC
> > +#define CONFIG_SYS_FSL_ESDHC_ADDR	0
> > +#define USDHC1_BASE_ADDR		0x5B010000
> > +#define USDHC2_BASE_ADDR		0x5B020000
> > +#define USDHC3_BASE_ADDR		0x5B030000
> 
> Not needed.

if I remove that above Boot is stuck at:
Loading Environment from MMC...

  
> > +#ifdef CONFIG_AHAB_BOOT
> > +#define AHAB_ENV "sec_boot=yes\0"
> > +#else
> > +#define AHAB_ENV "sec_boot=no\0"
> 
> AHAB not supported currently in upstream.

ok, do you know if I can do hab4 instead with the imx8qm?

very thx for your feedback.

Best regards,

Oliver