clk: ux500: Add Device Tree support for the TWD clock

This patch enables the TWD fixed factor clock to be specified from
Device Tree via phandles to the "smp-twd-clock" node.

Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/clk/ux500/u8500_of_clk.c b/drivers/clk/ux500/u8500_of_clk.c
index fc647cf1dd97..0769db85e772 100644
--- a/drivers/clk/ux500/u8500_of_clk.c
+++ b/drivers/clk/ux500/u8500_of_clk.c
@@ -60,7 +60,7 @@ void u8500_of_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,
         struct device_node *np = NULL;
         struct device_node *child = NULL;
         const char *sgaclk_parent = NULL;
-        struct clk *clk, *rtc_clk;
+        struct clk *clk, *rtc_clk, *twd_clk;
 
         if (of_have_populated_dt())
                 np = of_find_matching_node(NULL, u8500_clk_of_match);
@@ -234,7 +234,7 @@ void u8500_of_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,
         clk = clk_reg_prcmu_scalable_rate("armss", NULL,
                                 PRCMU_ARMSS, 0, CLK_IS_ROOT|CLK_IGNORE_UNUSED);
 
-        clk = clk_register_fixed_factor(NULL, "smp_twd", "armss",
+        twd_clk = clk_register_fixed_factor(NULL, "smp_twd", "armss",
                                 CLK_IGNORE_UNUSED, 1, 2);
 
         /*
@@ -551,5 +551,8 @@ void u8500_of_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,
 
                 if (!of_node_cmp(child->name, "rtc32k-clock"))
                         of_clk_add_provider(child, of_clk_src_simple_get, rtc_clk);
+
+                if (!of_node_cmp(child->name, "smp-twd-clock"))
+                        of_clk_add_provider(child, of_clk_src_simple_get, twd_clk);
         }
 }