[PATCH] clk: stm32mp1: add support of missing SPI clocks

[Patrick Delaunay]

Add the missing SPI clock even if these instances are not available
on STMicroelectronics boards: SPI2_K, SPI3_K, SPI4_K, SPI6_K.

With this patch, the SPI2 / SPI3 / SPI4 / SPI6 instances can be used on
customer design without the clock driver error:
  stm32mp1_clk_get_id: clk id 131 not found

Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 drivers/clk/clk_stm32mp1.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/clk/clk_stm32mp1.c b/drivers/clk/clk_stm32mp1.c
index 0c0ef366a1..599c2e7095 100644
--- a/drivers/clk/clk_stm32mp1.c
+++ b/drivers/clk/clk_stm32mp1.c
@@ -73,6 +73,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #define RCC_PLL2FRACR		0xA0
 #define RCC_PLL2CSGR		0xA4
 #define RCC_I2C46CKSELR		0xC0
+#define RCC_SPI6CKSELR		0xC4
 #define RCC_CPERCKSELR		0xD0
 #define RCC_STGENCKSELR		0xD4
 #define RCC_DDRITFCR		0xD8
@@ -103,6 +104,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #define RCC_I2C12CKSELR		0x8C0
 #define RCC_I2C35CKSELR		0x8C4
 #define RCC_SPI2S1CKSELR	0x8D8
+#define RCC_SPI2S23CKSELR	0x8DC
 #define RCC_SPI45CKSELR		0x8E0
 #define RCC_UART6CKSELR		0x8E4
 #define RCC_UART24CKSELR	0x8E8
@@ -313,7 +315,9 @@ enum stm32mp1_parent_sel {
 	_DSI_SEL,
 	_ADC12_SEL,
 	_SPI1_SEL,
+	_SPI23_SEL,
 	_SPI45_SEL,
+	_SPI6_SEL,
 	_RTC_SEL,
 	_PARENT_SEL_NB,
 	_UNKNOWN_SEL = 0xff,
@@ -524,6 +528,8 @@ static const struct stm32mp1_clk_gate stm32mp1_clk_gate[] = {
 	STM32MP1_CLK(RCC_DDRITFCR, 9, DDRPHYCAPB, _UNKNOWN_SEL),
 	STM32MP1_CLK(RCC_DDRITFCR, 10, DDRPHYCAPBLP, _UNKNOWN_SEL),
 
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 11, SPI2_K, _SPI23_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 12, SPI3_K, _SPI23_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 14, USART2_K, _UART24_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 15, USART3_K, _UART35_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 16, UART4_K, _UART24_SEL),
@@ -536,6 +542,7 @@ static const struct stm32mp1_clk_gate stm32mp1_clk_gate[] = {
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 24, I2C5_K, _I2C35_SEL),
 
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 8, SPI1_K, _SPI1_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 9, SPI4_K, _SPI45_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 10, SPI5_K, _SPI45_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 13, USART6_K, _UART6_SEL),
 
@@ -548,6 +555,7 @@ static const struct stm32mp1_clk_gate stm32mp1_clk_gate[] = {
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 15, IWDG2, _UNKNOWN_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 16, USBPHY_K, _USBPHY_SEL),
 
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 0, SPI6_K, _SPI6_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 2, I2C4_K, _I2C46_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 3, I2C6_K, _I2C46_SEL),
 	STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 8, RTCAPB, _PCLK5),
@@ -612,10 +620,13 @@ static const u8 usbo_parents[] = {_PLL4_R, _USB_PHY_48};
 static const u8 stgen_parents[] = {_HSI_KER, _HSE_KER};
 static const u8 dsi_parents[] = {_DSI_PHY, _PLL4_P};
 static const u8 adc_parents[] = {_PLL4_R, _CK_PER, _PLL3_Q};
+/* same parents for SPI1=RCC_SPI2S1CKSELR and SPI2&3 = RCC_SPI2S23CKSELR */
 static const u8 spi_parents[] = {_PLL4_P, _PLL3_Q, _I2S_CKIN, _CK_PER,
 				 _PLL3_R};
 static const u8 spi45_parents[] = {_PCLK2, _PLL4_Q, _HSI_KER, _CSI_KER,
 				   _HSE_KER};
+static const u8 spi6_parents[] = {_PCLK5, _PLL4_Q, _HSI_KER, _CSI_KER,
+				  _HSE_KER, _PLL3_Q};
 static const u8 rtc_parents[] = {_UNKNOWN_ID, _LSE, _LSI, _HSE};
 
 static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = {
@@ -642,7 +653,9 @@ static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = {
 	STM32MP1_CLK_PARENT(_DSI_SEL, RCC_DSICKSELR, 0, 0x1, dsi_parents),
 	STM32MP1_CLK_PARENT(_ADC12_SEL, RCC_ADCCKSELR, 0, 0x3, adc_parents),
 	STM32MP1_CLK_PARENT(_SPI1_SEL, RCC_SPI2S1CKSELR, 0, 0x7, spi_parents),
+	STM32MP1_CLK_PARENT(_SPI23_SEL, RCC_SPI2S23CKSELR, 0, 0x7, spi_parents),
 	STM32MP1_CLK_PARENT(_SPI45_SEL, RCC_SPI45CKSELR, 0, 0x7, spi45_parents),
+	STM32MP1_CLK_PARENT(_SPI6_SEL, RCC_SPI6CKSELR, 0, 0x7, spi6_parents),
 	STM32MP1_CLK_PARENT(_RTC_SEL, RCC_BDCR, RCC_BDCR_RTCSRC_SHIFT,
 			    (RCC_BDCR_RTCSRC_MASK >> RCC_BDCR_RTCSRC_SHIFT),
 			    rtc_parents),
-- 
2.25.1