[PATCH 17/22] mfd: sun6i-prcm: Add support for Allwinner A23 PRCM

Chen-Yu Tsai
2014-05-23T08:27:53Z

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 <wens@csie.org>
---
.../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,
+ },
+ {
+ .name = "sun6i-a31-apb0-clock-reset",
+ .of_compatible = "allwinner,sun6i-a31-clock-reset",
+ .num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res),
+ .resources = sun6i_a31_apb0_rstc_res,
+ },
+};
+
static const struct prcm_data sun6i_a31_prcm_data = {
.nsubdevs = ARRAY_SIZE(sun6i_a31_prcm_subdevs),
.subdevs = sun6i_a31_prcm_subdevs,
};

+static const struct prcm_data sun8i_a23_prcm_data = {
+ .nsubdevs = ARRAY_SIZE(sun8i_a23_prcm_subdevs),
+ .subdevs = sun8i_a23_prcm_subdevs,
+};
+
static const struct of_device_id sun6i_prcm_dt_ids[] = {
{
.compatible = "allwinner,sun6i-a31-prcm",
.data = &sun6i_a31_prcm_data,
},
+ {
+ .compatible = "allwinner,sun8i-a23-prcm",
+ .data = &sun8i_a23_prcm_data,
+ },
{ /* sentinel */ },
};

--
2.0.0.rc2