[PATCH v3] pmdomain: imx: Make IMX8M/IMX9 BLK_CTRL tristate

[Zhipeng Wang]

Convert IMX8M_BLK_CTRL and IMX9_BLK_CTRL from bool to tristate
to allow building as loadable modules.

Add prompt strings to make these options visible and configurable
in menuconfig, keeping them enabled by default on appropriate platforms.

Also remove the IMX_GPCV2_PM_DOMAINS dependency from IMX9_BLK_CTRL.
This dependency was incorrect from the beginning because i.MX93 uses a
different power domain architecture compared to i.MX8M series:

- i.MX8M uses GPCv2 (General Power Controller v2) for power domain
  management, hence IMX8M_BLK_CTRL correctly depends on it.

- i.MX93 uses BLK_CTRL directly without GPCv2. The hardware doesn't
  have GPCv2 at all.

Signed-off-by: Zhipeng Wang <zhipeng.wang_1@xxxxxxx>
Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
---
 drivers/pmdomain/imx/Kconfig | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/pmdomain/imx/Kconfig b/drivers/pmdomain/imx/Kconfig
index 00203615c65e..9168d183b0c5 100644
--- a/drivers/pmdomain/imx/Kconfig
+++ b/drivers/pmdomain/imx/Kconfig
@@ -10,15 +10,18 @@ config IMX_GPCV2_PM_DOMAINS
 	default y if SOC_IMX7D
 
 config IMX8M_BLK_CTRL
-	bool
-	default SOC_IMX8M && IMX_GPCV2_PM_DOMAINS
+	tristate "i.MX8M BLK CTRL driver"
+	depends on SOC_IMX8M
+	depends on IMX_GPCV2_PM_DOMAINS
 	depends on PM_GENERIC_DOMAINS
 	depends on COMMON_CLK
+	default y
 
 config IMX9_BLK_CTRL
-	bool
-	default SOC_IMX9 && IMX_GPCV2_PM_DOMAINS
+	tristate "i.MX93 BLK CTRL driver"
+	depends on SOC_IMX9
 	depends on PM_GENERIC_DOMAINS
+	default y
 
 config IMX_SCU_PD
 	bool "IMX SCU Power Domain driver"
-- 
2.34.1