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Subject[PATCH v2 10/12] clk: stm32mp1: add RTC clock
Date
From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch adds the RTC clock.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
---
drivers/clk/clk-stm32mp1.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/drivers/clk/clk-stm32mp1.c b/drivers/clk/clk-stm32mp1.c
index b5379a2..51e3e76 100644
--- a/drivers/clk/clk-stm32mp1.c
+++ b/drivers/clk/clk-stm32mp1.c
@@ -248,6 +248,10 @@
"ck_dsi_phy", "pll4_p"
};

+static const char * const rtc_src[] = {
+ "off", "ck_lse", "ck_lsi", "ck_hse_rtc"
+};
+
static const struct clk_div_table axi_div_table[] = {
{ 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 },
{ 4, 4 }, { 5, 4 }, { 6, 4 }, { 7, 4 },
@@ -1945,6 +1949,17 @@ enum {
_NO_GATE,
_MMUX(M_ETHCK),
_DIV(RCC_ETHCKSELR, 4, 4, CLK_DIVIDER_ALLOW_ZERO, NULL)),
+
+ /* RTC clock */
+ DIV(NO_ID, "ck_hse_rtc", "ck_hse", 0, RCC_RTCDIVR, 0, 7,
+ CLK_DIVIDER_ALLOW_ZERO),
+
+ COMPOSITE(RTC, "ck_rtc", rtc_src, CLK_OPS_PARENT_ENABLE |
+ CLK_SET_RATE_PARENT,
+ _GATE(RCC_BDCR, 20, 0),
+ _MUX(RCC_BDCR, 16, 2, 0),
+ _NO_DIV),
+
};

struct stm32_clock_match_data {
--
1.9.1
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