The Allwinner A23 SoC has a PRCM unit like the previous A31 SoC.
The differences are the AR100 clock can no longer be modified,
and the APB0 clock has different divisors.

This patch adds a compatible with a modified subdevice list for
the A23.

Signed-off-by: Chen-Yu Tsai <redacted>
---
 .../devicetree/bindings/mfd/sun6i-prcm.txt         |  2 +-
 drivers/mfd/sun6i-prcm.c                           | 30 ++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt b/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt
index 1f5a31f..03c5a55 100644
--- a/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt
+++ b/Documentation/devicetree/bindings/mfd/sun6i-prcm.txt

@@ -4,7 +4,7 @@ PRCM is an MFD device exposing several Power Management related devices
 (like clks and reset controllers).
 
 Required properties:
- - compatible: "allwinner,sun6i-a31-prcm"
+ - compatible: "allwinner,sun6i-a31-prcm" or "allwinner,sun8i-a23-prcm"
  - reg: The PRCM registers range
 
 The prcm node may contain several subdevices definitions:

diff --git a/drivers/mfd/sun6i-prcm.c b/drivers/mfd/sun6i-prcm.c
index 718fc4d..c96bb6c 100644
--- a/drivers/mfd/sun6i-prcm.c
+++ b/drivers/mfd/sun6i-prcm.c

@@ -76,16 +76,46 @@ static const struct mfd_cell sun6i_a31_prcm_subdevs[] = {
 	},
 };
 
+static const struct mfd_cell sun8i_a23_prcm_subdevs[] = {
+	{
+		.name = "sun6i-a31-apb0-clk",
+		.of_compatible = "allwinner,sun8i-a23-apb0-clk",
+		.num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res),
+		.resources = sun6i_a31_apb0_clk_res,
+	},
+	{
+		.name = "sun6i-a31-apb0-gates-clk",
+		.of_compatible = "allwinner,sun6i-a31-apb0-gates-clk",
+		.num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res),
+		.resources = sun6i_a31_apb0_gates_clk_res,
+	},