i.MX drivers change for 6.2:

- Improve imx8m-blk-ctrl driver to allow deferred probe in case that
   'bus' genpd is not yet ready.
 - Add missing USB_1_PHY PD for i.MX scu-pd firmware driver.
 - Add GENPD_FLAG_ACTIVE_WAKEUP flag for i.MX8MM/N in GPCv2 driver, so
   that the power domain remains on if USB remote wakeup is enabled.
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Merge tag 'imx-drivers-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/drivers

i.MX drivers change for 6.2:

- Improve imx8m-blk-ctrl driver to allow deferred probe in case that
  'bus' genpd is not yet ready.
- Add missing USB_1_PHY PD for i.MX scu-pd firmware driver.
- Add GENPD_FLAG_ACTIVE_WAKEUP flag for i.MX8MM/N in GPCv2 driver, so
  that the power domain remains on if USB remote wakeup is enabled.

* tag 'imx-drivers-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: gpcv2: add GENPD_FLAG_ACTIVE_WAKEUP flag for usb of imx8mm/n
  firmware: imx: scu-pd: add missed USB_1_PHY pd
  soc: imx: imx8m-blk-ctrl: Defer probe if 'bus' genpd is not yet ready

Link: https://lore.kernel.org/r/20221119125733.32719-1-shawnguo@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/firmware/imx/scu-pd.c

@@ -108,6 +108,7 @@ static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = {
 	/* CONN SS */
 	{ "usb", IMX_SC_R_USB_0, 2, true, 0 },
 	{ "usb0phy", IMX_SC_R_USB_0_PHY, 1, false, 0 },
+	{ "usb1phy", IMX_SC_R_USB_1_PHY, 1, false, 0},
 	{ "usb2", IMX_SC_R_USB_2, 1, false, 0 },
 	{ "usb2phy", IMX_SC_R_USB_2_PHY, 1, false, 0 },
 	{ "sdhc", IMX_SC_R_SDHC_0, 3, true, 0 },

drivers/soc/imx/gpcv2.c

@@ -755,6 +755,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = {
 	[IMX8MM_POWER_DOMAIN_OTG1] = {
 		.genpd = {
 			.name = "usb-otg1",
+			.flags = GENPD_FLAG_ACTIVE_WAKEUP,
 		},
 		.bits  = {
 			.pxx = IMX8MM_OTG1_SW_Pxx_REQ,
@@ -766,6 +767,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = {
 	[IMX8MM_POWER_DOMAIN_OTG2] = {
 		.genpd = {
 			.name = "usb-otg2",
+			.flags = GENPD_FLAG_ACTIVE_WAKEUP,
 		},
 		.bits  = {
 			.pxx = IMX8MM_OTG2_SW_Pxx_REQ,
@@ -1232,6 +1234,7 @@ static const struct imx_pgc_domain imx8mn_pgc_domains[] = {
 	[IMX8MN_POWER_DOMAIN_OTG1] = {
 		.genpd = {
 			.name = "usb-otg1",
+			.flags = GENPD_FLAG_ACTIVE_WAKEUP,
 		},
 		.bits  = {
 			.pxx = IMX8MN_OTG1_SW_Pxx_REQ,

drivers/soc/imx/imx8m-blk-ctrl.c

@@ -210,9 +210,14 @@ static int imx8m_blk_ctrl_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	bc->bus_power_dev = genpd_dev_pm_attach_by_name(dev, "bus");
-	if (IS_ERR(bc->bus_power_dev))
-		return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev),
-				     "failed to attach power domain \"bus\"\n");
+	if (IS_ERR(bc->bus_power_dev)) {
+		if (PTR_ERR(bc->bus_power_dev) == -ENODEV)
+			return dev_err_probe(dev, -EPROBE_DEFER,
+					     "failed to attach power domain \"bus\"\n");
+		else
+			return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev),
+					     "failed to attach power domain \"bus\"\n");
+	}
 
 	for (i = 0; i < bc_data->num_domains; i++) {
 		const struct imx8m_blk_ctrl_domain_data *data = &bc_data->domains[i];