Hi Alexandre,
On 9/21/21 12:48 AM, Alexandre Ghiti wrote:
> This pmic device is present on the SiFive Unmatched board and this
> new driver adds the possibility to reset it.
Is there any patch before applying this?
I cant' apply this from patchwork for checking.
If i missed something, let me know, plz.
Best Regards,
Jaehoon Chung
>
> Signed-off-by: Alexandre Ghiti <alexandre.gh...@canonical.com>
> ---
> configs/sifive_unmatched_defconfig | 2 ++
> drivers/power/pmic/da9063.c | 49 ++++++++++++++++++++++++++++++
> 2 files changed, 51 insertions(+)
>
> diff --git a/configs/sifive_unmatched_defconfig
> b/configs/sifive_unmatched_defconfig
> index 978818b688..9ab058be39 100644
> --- a/configs/sifive_unmatched_defconfig
> +++ b/configs/sifive_unmatched_defconfig
> @@ -43,3 +43,5 @@ CONFIG_DM_USB=y
> CONFIG_USB_XHCI_HCD=y
> CONFIG_USB_XHCI_PCI=y
> CONFIG_BOARD_EARLY_INIT_F=y
> +CONFIG_DM_PMIC=y
> +CONFIG_DM_PMIC_DA9063=y
> diff --git a/drivers/power/pmic/da9063.c b/drivers/power/pmic/da9063.c
> index 25101d18f7..b04879d9c5 100644
> --- a/drivers/power/pmic/da9063.c
> +++ b/drivers/power/pmic/da9063.c
> @@ -10,6 +10,7 @@
> #include <dm.h>
> #include <i2c.h>
> #include <log.h>
> +#include <dm/lists.h>
> #include <power/pmic.h>
> #include <power/regulator.h>
> #include <power/da9063_pmic.h>
> @@ -87,6 +88,7 @@ static int da9063_bind(struct udevice *dev)
> {
> ofnode regulators_node;
> int children;
> + int ret;
>
> regulators_node = dev_read_subnode(dev, "regulators");
> if (!ofnode_valid(regulators_node)) {
> @@ -101,6 +103,14 @@ static int da9063_bind(struct udevice *dev)
> if (!children)
> debug("%s: %s - no child found\n", __func__, dev->name);
>
> + if (CONFIG_IS_ENABLED(SYSRESET)) {
> + ret = device_bind_driver(dev, "da9063-sysreset",
> + "da9063-sysreset", NULL);
> + if (ret)
> + debug("%s: %s - failed to bind sysreset driver\n",
> + __func__, dev->name);
> + }
> +
> /* Always return success for this device */
> return 0;
> }
> @@ -129,3 +139,42 @@ U_BOOT_DRIVER(pmic_da9063) = {
> .probe = da9063_probe,
> .ops = &da9063_ops,
> };
> +
> +#ifdef CONFIG_SYSRESET
> +#include <sysreset.h>
> +
> +static int da9063_sysreset_request(struct udevice *dev, enum sysreset_t type)
> +{
> + struct udevice *pmic_dev = dev->parent;
> + uint ret;
> +
> + if (type != SYSRESET_WARM && type != SYSRESET_COLD)
> + return -EPROTONOSUPPORT;
> +
> + ret = pmic_reg_write(pmic_dev, DA9063_REG_PAGE_CON, 0x00);
> + if (ret < 0)
> + return ret;
> +
> + /* Sets the WAKE_UP bit */
> + ret = pmic_reg_write(pmic_dev, DA9063_REG_CONTROL_F, 0x04);
> + if (ret < 0)
> + return ret;
> +
> + /* Powerdown! */
> + ret = pmic_reg_write(pmic_dev, DA9063_REG_CONTROL_A, 0x68);
> + if (ret < 0)
> + return ret;
> +
> + return -EINPROGRESS;
> +}
> +
> +static struct sysreset_ops da9063_sysreset_ops = {
> + .request = da9063_sysreset_request,
> +};
> +
> +U_BOOT_DRIVER(da9063_sysreset) = {
> + .name = "da9063-sysreset",
> + .id = UCLASS_SYSRESET,
> + .ops = &da9063_sysreset_ops,
> +};
> +#endif
>
