[PATCH] clk: shmobile: clk-mstp: change to using clock-indices

[ben.dooks@codethink.co.uk (Ben Dooks)]

With the addition of clock-indices, we need to change the renesas
clock implementation to use these instead of the local definition
of "renesas,clock-indices".

Since this will break booting with older device trees, we add a
simple auto-detection of which properties are present.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
 .../devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt        | 2 +-
 drivers/clk/shmobile/clk-mstp.c                                  | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt
index 5992dce..02a25d9 100644
--- a/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt
+++ b/Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt
@@ -43,7 +43,7 @@ Example
 		clock-output-names =
 			"tpu0", "mmcif1", "sdhi3", "sdhi2",
 			 "sdhi1", "sdhi0", "mmcif0";
-		renesas,clock-indices = <
+		clock-indices = <
 			R8A7790_CLK_TPU0 R8A7790_CLK_MMCIF1 R8A7790_CLK_SDHI3
 			R8A7790_CLK_SDHI2 R8A7790_CLK_SDHI1 R8A7790_CLK_SDHI0
 			R8A7790_CLK_MMCIF0
diff --git a/drivers/clk/shmobile/clk-mstp.c b/drivers/clk/shmobile/clk-mstp.c
index 2e5810c..1f6324e 100644
--- a/drivers/clk/shmobile/clk-mstp.c
+++ b/drivers/clk/shmobile/clk-mstp.c
@@ -156,6 +156,7 @@ cpg_mstp_clock_register(const char *name, const char *parent_name,
 static void __init cpg_mstp_clocks_init(struct device_node *np)
 {
 	struct mstp_clock_group *group;
+	const char *idxname;
 	struct clk **clks;
 	unsigned int i;
 
@@ -184,6 +185,11 @@ static void __init cpg_mstp_clocks_init(struct device_node *np)
 	for (i = 0; i < MSTP_MAX_CLOCKS; ++i)
 		clks[i] = ERR_PTR(-ENOENT);
 
+	if (of_find_property(np, "clock-indices", &i))
+		idxname = "clock-indices";
+	else
+		idxname = "renesas,clock-indices";
+
 	for (i = 0; i < MSTP_MAX_CLOCKS; ++i) {
 		const char *parent_name;
 		const char *name;
@@ -197,8 +203,7 @@ static void __init cpg_mstp_clocks_init(struct device_node *np)
 			continue;
 
 		parent_name = of_clk_get_parent_name(np, i);
-		ret = of_property_read_u32_index(np, "renesas,clock-indices", i,
-						 &clkidx);
+		ret = of_property_read_u32_index(np, idxname, i, &clkidx);
 		if (parent_name == NULL || ret < 0)
 			break;
 
-- 
1.9.1