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clk: shmobile: clk-mstp: change to using clock-indices

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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>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Ben Dooks 2014-04-15 17:06:34 +01:00 committed by Mike Turquette
parent 874f224cc5
commit 8e33f91a0b
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt
View File

@ -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

9
drivers/clk/shmobile/clk-mstp.c
View File

@ -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;