From: Gabriel Fernandez <gabriel.fernan...@st.com>

This patch introduces SAI clocks for stm32f4 socs.

Signed-off-by: Gabriel Fernandez <gabriel.fernan...@st.com>
---
 drivers/clk/clk-stm32f4.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c
index 3063b30..02339d1 100644
--- a/drivers/clk/clk-stm32f4.c
+++ b/drivers/clk/clk-stm32f4.c
@@ -937,6 +937,9 @@ static struct clk_hw *stm32_register_cclk(struct device 
*dev, const char *name,
 
 static const char *i2s_parents[2] = { "plli2s-r", NULL };
 
+static const char *sai_parents[4] = { "pllsai-q-div", "plli2s-q-div", NULL,
+       "no-clock" };
+
 struct stm32_aux_clk {
        int idx;
        const char *name;
@@ -977,6 +980,18 @@ struct stm32f4_clk_data {
                NO_GATE, 0,
                CLK_SET_RATE_PARENT
        },
+       {
+               CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents),
+               STM32F4_RCC_DCKCFGR, 20, 3,
+               STM32F4_RCC_APB2ENR, 22,
+               CLK_SET_RATE_PARENT
+       },
+       {
+               CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents),
+               STM32F4_RCC_DCKCFGR, 22, 3,
+               STM32F4_RCC_APB2ENR, 22,
+               CLK_SET_RATE_PARENT
+       },
 };
 
 static const struct stm32f4_clk_data stm32f429_clk_data = {
@@ -1109,6 +1124,7 @@ static void __init stm32f4_rcc_init(struct device_node 
*np)
        i2s_in_clk = of_clk_get_parent_name(np, 1);
 
        i2s_parents[1] = i2s_in_clk;
+       sai_parents[2] = i2s_in_clk;
 
        clk_register_fixed_rate_with_accuracy(NULL, "hsi", NULL, 0,
                        16000000, 160000);
-- 
1.9.1

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