clk: bd718xx: Drop BD70528 support

The only known BD70528 use-cases are such that the PMIC is controlled
from separate MCU which is not running Linux. I am not aware of
any Linux driver users. Furthermore, it seems there is no demand for
this IC. Let's ease the maintenance burden and drop the driver. We can
always add it back if there is sudden need for it.

Signed-off-by: Matti Vaittinen <[email protected]>
Link: https://lore.kernel.org/r/937ed0828486a08e2d00bce2815d491c1c9c49b4.1621937490.git.matti.vaittinen@fi.rohmeurope.com
Signed-off-by: Stephen Boyd <[email protected]>

Author: M-Vaittinen

drivers/clk/Kconfig

@@ -358,10 +358,10 @@ config COMMON_CLK_MMP2_AUDIO
 
 config COMMON_CLK_BD718XX
 	tristate "Clock driver for 32K clk gates on ROHM PMICs"
-	depends on MFD_ROHM_BD718XX || MFD_ROHM_BD70528 || MFD_ROHM_BD71828
+	depends on MFD_ROHM_BD718XX || MFD_ROHM_BD71828
 	help
-	  This driver supports ROHM BD71837, ROHM BD71847, ROHM BD71828 and
-	  ROHM BD70528 PMICs clock gates.
+	  This driver supports ROHM BD71837, BD71847, BD71850, BD71815
+	  and BD71828 PMICs clock gates.
 
 config COMMON_CLK_FIXED_MMIO
 	bool "Clock driver for Memory Mapped Fixed values"

drivers/clk/clk-bd718x7.c

@@ -15,15 +15,13 @@
 /* clk control registers */
 /* BD71815 */
 #define BD71815_REG_OUT32K	0x1d
-/* BD70528 */
-#define BD70528_REG_OUT32K	0x2c
 /* BD71828 */
 #define BD71828_REG_OUT32K	0x4B
 /* BD71837 and BD71847 */
 #define BD718XX_REG_OUT32K	0x2E
 
 /*
- * BD71837, BD71847, BD70528 and BD71828 all use bit [0] to clk output control
+ * BD71837, BD71847, and BD71828 all use bit [0] to clk output control
  */
 #define CLK_OUT_EN_MASK		BIT(0)
 
@@ -116,10 +114,6 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 		c->reg = BD71828_REG_OUT32K;
 		c->mask = CLK_OUT_EN_MASK;
 		break;
-	case ROHM_CHIP_TYPE_BD70528:
-		c->reg = BD70528_REG_OUT32K;
-		c->mask = CLK_OUT_EN_MASK;
-		break;
 	case ROHM_CHIP_TYPE_BD71815:
 		c->reg = BD71815_REG_OUT32K;
 		c->mask = CLK_OUT_EN_MASK;
@@ -150,7 +144,6 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 static const struct platform_device_id bd718x7_clk_id[] = {
 	{ "bd71837-clk", ROHM_CHIP_TYPE_BD71837 },
 	{ "bd71847-clk", ROHM_CHIP_TYPE_BD71847 },
-	{ "bd70528-clk", ROHM_CHIP_TYPE_BD70528 },
 	{ "bd71828-clk", ROHM_CHIP_TYPE_BD71828 },
 	{ "bd71815-clk", ROHM_CHIP_TYPE_BD71815 },
 	{ },
@@ -168,6 +161,6 @@ static struct platform_driver bd71837_clk = {
 module_platform_driver(bd71837_clk);
 
 MODULE_AUTHOR("Matti Vaittinen <[email protected]>");
-MODULE_DESCRIPTION("BD718(15/18/28/37/47/50) and BD70528 chip clk driver");
+MODULE_DESCRIPTION("BD718(15/18/28/37/47/50) and chip clk driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:bd718xx-clk");