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Subject[PATCH 22/33] clk: ux500: Add Device Tree support for the RTC clock
Date
This patch enables the RTC fixed frequency clock to be specified from
Device Tree via phandles to the "rtc32k-clock" node.

Cc: Mike Turquette <mturquette@linaro.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
drivers/clk/ux500/u8500_clk.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/ux500/u8500_clk.c b/drivers/clk/ux500/u8500_clk.c
index c3ed09c..ebd0381 100644
--- a/drivers/clk/ux500/u8500_clk.c
+++ b/drivers/clk/ux500/u8500_clk.c
@@ -60,7 +60,7 @@ void u8500_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;
+ struct clk *clk, *rtc_clk;

/* Clock sources */
clk = clk_reg_prcmu_gate("soc0_pll", NULL, PRCMU_PLLSOC0,
@@ -80,11 +80,11 @@ void u8500_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,

/* FIXME: Add sys, ulp and int clocks here. */

- clk = clk_register_fixed_rate(NULL, "rtc32k", "NULL",
+ rtc_clk = clk_register_fixed_rate(NULL, "rtc32k", "NULL",
CLK_IS_ROOT|CLK_IGNORE_UNUSED,
32768);
- clk_register_clkdev(clk, "clk32k", NULL);
- clk_register_clkdev(clk, "apb_pclk", "rtc-pl031");
+ clk_register_clkdev(rtc_clk, "clk32k", NULL);
+ clk_register_clkdev(rtc_clk, "apb_pclk", "rtc-pl031");

/* PRCMU clocks */
fw_version = prcmu_get_fw_version();
@@ -690,5 +690,8 @@ void u8500_clk_init(u32 clkrst1_base, u32 clkrst2_base, u32 clkrst3_base,

if (!of_node_cmp(child->name, "prcc-kernel-clock"))
of_clk_add_provider(child, ux500_twocell_get, prcc_kclk);
+
+ if (!of_node_cmp(child->name, "rtc32k-clock"))
+ of_clk_add_provider(child, of_clk_src_simple_get, rtc_clk);
}
}
--
1.7.10.4


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