[PATCH] ARM: dts: stm32: Add DFU support for DHCOM recovery

Marek Vasut marex at denx.de
Tue Mar 15 10:49:28 CET 2022 

On 3/15/22 10:02, Patrice CHOTARD wrote:
> Hi Marek
> 
> On 3/15/22 09:51, Marek Vasut wrote:
>> On 3/15/22 09:19, Patrice CHOTARD wrote:
>>> Hi Marek
>>>
>>> On 3/15/22 08:48, Patrice CHOTARD wrote:
>>>> Hi Marek
>>>>
>>>> On 3/14/22 13:35, Marek Vasut wrote:
>>>>> This patch configures U-Boot SPL for DHCOM SoM to permit DFU upload of
>>>>> SPL and subsequent u-boot.itb for recovery or commissioning purposes.
>>>>>
>>>>> The DFU usage procedure is identical to STM32MP1 DHCOR SoM, see commit
>>>>> 3919aa1722a ("ARM: dts: stm32: Add DFU support for DHCOR recovery") ,
>>>>> except for switching the SoM into DFU mode. By default, the DHCOM SoM
>>>>> has no dedicated mechanism for setting BOOTn straps into UART/USB mode,
>>>>> therefore to enter DFU mode, the SoC must fail to boot from boot media
>>>>> which can be selected by the BOOTn strap override mechanism first and
>>>>> then fall back to DFU mode.
>>>>>
>>>>> In case of a SoM with pre-populated BOOTn strap override button, power
>>>>> the system off, remove microSD card (if applicable), hold down the BOOTn
>>>>> strap override button located between eMMC and SoM edge connector, power
>>>>> on the SoM. The SoC will fail to boot from SD card and fall back into
>>>>> DFU mode.
>>>>>
>>>>> Signed-off-by: Marek Vasut <marex at denx.de>
>>>>> Cc: Patrice Chotard <patrice.chotard at foss.st.com>
>>>>> Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
>>>>> ---
>>>>>    arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi | 42 ++++++++++++++++++++++
>>>>>    configs/stm32mp15_dhcom_basic_defconfig    | 15 ++++++--
>>>>>    2 files changed, 54 insertions(+), 3 deletions(-)
>>>>>
>>>>> diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
>>>>> index f09f4290f62..d73967ac1b5 100644
>>>>> --- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
>>>>> +++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
>>>>> @@ -58,6 +58,7 @@
>>>>>      &i2c4 {
>>>>>        u-boot,dm-pre-reloc;
>>>>> +    u-boot,dm-spl;
>>>>>          eeprom0: eeprom at 50 {
>>>>>        };
>>>>> @@ -98,6 +99,11 @@
>>>>>      &pmic {
>>>>>        u-boot,dm-pre-reloc;
>>>>> +    u-boot,dm-spl;
>>>>> +
>>>>> +    regulators {
>>>>> +        u-boot,dm-spl;
>>>>> +    };
>>>>>    };
>>>>>      &flash0 {
>>>>> @@ -288,3 +294,39 @@
>>>>>            bias-pull-up;
>>>>>        };
>>>>>    };
>>>>> +
>>>>> +&reg11 {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&reg18 {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&usb33 {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&usbotg_hs_pins_a {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&usbotg_hs {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&usbphyc {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&usbphyc_port0 {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&usbphyc_port1 {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> +
>>>>> +&vdd_usb {
>>>>> +    u-boot,dm-spl;
>>>>> +};
>>>>> diff --git a/configs/stm32mp15_dhcom_basic_defconfig b/configs/stm32mp15_dhcom_basic_defconfig
>>>>> index c422c47775e..438bba37dee 100644
>>>>> --- a/configs/stm32mp15_dhcom_basic_defconfig
>>>>> +++ b/configs/stm32mp15_dhcom_basic_defconfig
>>>>> @@ -18,6 +18,7 @@ CONFIG_DISTRO_DEFAULTS=y
>>>>>    CONFIG_SYS_LOAD_ADDR=0xc2000000
>>>>>    CONFIG_FIT=y
>>>>>    CONFIG_SPL_LOAD_FIT=y
>>>>> +CONFIG_SPL_LOAD_FIT_ADDRESS=0xc1000000
>>>>>    CONFIG_SPL_FIT_SOURCE="board/dhelectronics/dh_stm32mp1/u-boot-dhcom.its"
>>>>>    # CONFIG_USE_SPL_FIT_GENERATOR is not set
>>>>>    CONFIG_BOOTDELAY=1
>>>>> @@ -27,12 +28,17 @@ CONFIG_BOARD_EARLY_INIT_F=y
>>>>>    CONFIG_SPL_LEGACY_IMAGE_SUPPORT=y
>>>>>    CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION=y
>>>>>    CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION=3
>>>>> +CONFIG_SPL_ENV_SUPPORT=y
>>>>>    CONFIG_SPL_I2C=y
>>>>>    CONFIG_SPL_MTD_SUPPORT=y
>>>>>    CONFIG_SPL_DM_SPI_FLASH=y
>>>>>    CONFIG_SPL_POWER=y
>>>>> +CONFIG_SPL_RAM_SUPPORT=y
>>>>> +CONFIG_SPL_RAM_DEVICE=y
>>>>>    CONFIG_SPL_SPI_FLASH_MTD=y
>>>>>    CONFIG_SYS_SPI_U_BOOT_OFFS=0x80000
>>>>> +CONFIG_SPL_USB_GADGET=y
>>>>> +CONFIG_SPL_DFU=y
>>>>>    CONFIG_SYS_PROMPT="STM32MP> "
>>>>>    # CONFIG_CMD_ELF is not set
>>>>>    # CONFIG_CMD_EXPORTENV is not set
>>>>> @@ -71,6 +77,7 @@ CONFIG_OF_SPL_REMOVE_PROPS="interrupts interrupt-names interrupts-extended inter
>>>>>    CONFIG_ENV_IS_IN_SPI_FLASH=y
>>>>>    CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
>>>>>    CONFIG_SYS_RELOC_GD_ENV_ADDR=y
>>>>> +CONFIG_SPL_ENV_IS_NOWHERE=y
>>>>>    CONFIG_NET_RANDOM_ETHADDR=y
>>>>>    CONFIG_IP_DEFRAG=y
>>>>>    CONFIG_TFTP_BLOCKSIZE=1536
>>>>> @@ -79,8 +86,6 @@ CONFIG_SPL_BLOCK_CACHE=y
>>>>>    CONFIG_DFU_MMC=y
>>>>>    CONFIG_DFU_MTD=y
>>>>>    CONFIG_DFU_RAM=y
>>>>> -CONFIG_DFU_VIRT=y
>>>>> -CONFIG_SET_DFU_ALT_INFO=y
>>>>>    CONFIG_GPIO_HOG=y
>>>>>    CONFIG_DM_HWSPINLOCK=y
>>>>>    CONFIG_HWSPINLOCK_STM32=y
>>>>> @@ -106,18 +111,20 @@ CONFIG_DM_ETH=y
>>>>>    CONFIG_DWC_ETH_QOS=y
>>>>>    CONFIG_KS8851_MLL=y
>>>>>    CONFIG_PHY=y
>>>>> +CONFIG_SPL_PHY=y
>>>>>    CONFIG_PHY_STM32_USBPHYC=y
>>>>>    CONFIG_PINCONF=y
>>>>>    # CONFIG_SPL_PINCTRL_FULL is not set
>>>>>    CONFIG_PINCTRL_STMFX=y
>>>>>    CONFIG_DM_PMIC=y
>>>>> -# CONFIG_SPL_PMIC_CHILDREN is not set
>>>>>    CONFIG_PMIC_STPMIC1=y
>>>>>    CONFIG_DM_REGULATOR=y
>>>>> +CONFIG_SPL_DM_REGULATOR=y
>>>>>    CONFIG_DM_REGULATOR_FIXED=y
>>>>>    CONFIG_DM_REGULATOR_GPIO=y
>>>>>    CONFIG_DM_REGULATOR_STM32_VREFBUF=y
>>>>>    CONFIG_DM_REGULATOR_STPMIC1=y
>>>>> +CONFIG_SPL_DM_REGULATOR_STPMIC1=y
>>>>>    CONFIG_REMOTEPROC_STM32_COPRO=y
>>>>>    CONFIG_DM_RTC=y
>>>>>    CONFIG_RTC_STM32=y
>>>>> @@ -129,8 +136,10 @@ CONFIG_STM32_SPI=y
>>>>>    CONFIG_SYSRESET_SYSCON=y
>>>>>    CONFIG_USB=y
>>>>>    CONFIG_DM_USB_GADGET=y
>>>>> +CONFIG_SPL_DM_USB_GADGET=y
>>>>>    CONFIG_USB_EHCI_HCD=y
>>>>>    CONFIG_USB_EHCI_GENERIC=y
>>>>> +CONFIG_USB_DWC2=y
>>>>>    CONFIG_USB_HOST_ETHER=y
>>>>>    CONFIG_USB_ETHER_ASIX=y
>>>>>    CONFIG_USB_GADGET=y
>>>>
>>>>
>>>> Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>
>>>>
>>>> Thanks
>>>> Patrice
>>>
>>> Applied to u-boot-stm32
>>
>> This is also for next release.
> you mean for v2022.04 or v2022.07 ?

If it was up to me, I would plan this patch for 2022.07 , since we are 
already in -rc4 . But since this is board specific, and board specific 
stuff can go in all the way until release, if you want to avoid having 
to do -next PR, then feel free to include it for v2022.04 , it's not 
like it wasn't tested.

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