From 07705583e920fef65a1bbe4549684f30df5c6ef2 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 8 Sep 2015 14:46:32 +0200 Subject: [PATCH] clk: shmobile: div6: Make clock-output-names optional Renesas DIV6 clocks provide a single clock output. Hence make the "clock-output-names" DT property optional instead of mandatory. In case the DT property is omitted the DT node name will be used. Rename the variable "name" to "clk_name" to make the code more similar with fixed-factor-clock.c, and to avoid a conflict with a nested local variable while we're at it. Signed-off-by: Geert Uytterhoeven --- .../bindings/clock/renesas,cpg-div6-clocks.txt | 4 ++++ drivers/clk/shmobile/clk-div6.c | 13 +++---------- 2 files changed, 7 insertions(+), 10 deletions(-) diff --git a/Documentation/devicetree/bindings/clock/renesas,cpg-div6-clocks.txt b/Documentation/devicetree/bindings/clock/renesas,cpg-div6-clocks.txt index 38dcf0370143..ae36ab842919 100644 --- a/Documentation/devicetree/bindings/clock/renesas,cpg-div6-clocks.txt +++ b/Documentation/devicetree/bindings/clock/renesas,cpg-div6-clocks.txt @@ -20,6 +20,10 @@ Required Properties: clocks must be specified. For clocks with multiple parents, invalid settings must be specified as "<0>". - #clock-cells: Must be 0 + + +Optional Properties: + - clock-output-names: The name of the clock as a free-form string diff --git a/drivers/clk/shmobile/clk-div6.c b/drivers/clk/shmobile/clk-div6.c index b4c8d6746f68..57016ff9c585 100644 --- a/drivers/clk/shmobile/clk-div6.c +++ b/drivers/clk/shmobile/clk-div6.c @@ -178,10 +178,9 @@ static void __init cpg_div6_clock_init(struct device_node *np) const char **parent_names; struct clk_init_data init; struct div6_clock *clock; - const char *name; + const char *clk_name = np->name; struct clk *clk; unsigned int i; - int ret; clock = kzalloc(sizeof(*clock), GFP_KERNEL); if (!clock) @@ -215,13 +214,7 @@ static void __init cpg_div6_clock_init(struct device_node *np) clock->div = (clk_readl(clock->reg) & CPG_DIV6_DIV_MASK) + 1; /* Parse the DT properties. */ - ret = of_property_read_string(np, "clock-output-names", &name); - if (ret < 0) { - pr_err("%s: failed to get %s DIV6 clock output name\n", - __func__, np->name); - goto error; - } - + of_property_read_string(np, "clock-output-names", &clk_name); for (i = 0, valid_parents = 0; i < num_parents; i++) { const char *name = of_clk_get_parent_name(np, i); @@ -255,7 +248,7 @@ static void __init cpg_div6_clock_init(struct device_node *np) } /* Register the clock. */ - init.name = name; + init.name = clk_name; init.ops = &cpg_div6_clock_ops; init.flags = CLK_IS_BASIC; init.parent_names = parent_names;