clk: add driver for stm32mp1

add RCC clock driver for STMP32MP157
- base on driver model = UCLASS_CLK
- support ops to enable, disable and get rate
  of all SOC clock needed by U-Boot

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

1 files changed, 1157 insertions, 0 deletions

diff --git a/drivers/clk/clk_stm32mp1.c b/drivers/clk/clk_stm32mp1.c
new file mode 100644
index 0000000000..0ea2035727
--- /dev/null
+++ b/drivers/clk/clk_stm32mp1.c
@@ -0,0 +1,1157 @@
+/*
+ * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier:	GPL-2.0+	BSD-3-Clause
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <div64.h>
+#include <dm.h>
+#include <regmap.h>
+#include <spl.h>
+#include <syscon.h>
+#include <linux/io.h>
+#include <dt-bindings/clock/stm32mp1-clks.h>
+
+#define MAX_HSI_HZ		64000000
+
+/* RCC registers */
+#define RCC_OCENSETR		0x0C
+#define RCC_OCENCLRR		0x10
+#define RCC_HSICFGR		0x18
+#define RCC_MPCKSELR		0x20
+#define RCC_ASSCKSELR		0x24
+#define RCC_RCK12SELR		0x28
+#define RCC_MPCKDIVR		0x2C
+#define RCC_AXIDIVR		0x30
+#define RCC_APB4DIVR		0x3C
+#define RCC_APB5DIVR		0x40
+#define RCC_RTCDIVR		0x44
+#define RCC_MSSCKSELR		0x48
+#define RCC_PLL1CR		0x80
+#define RCC_PLL1CFGR1		0x84
+#define RCC_PLL1CFGR2		0x88
+#define RCC_PLL1FRACR		0x8C
+#define RCC_PLL1CSGR		0x90
+#define RCC_PLL2CR		0x94
+#define RCC_PLL2CFGR1		0x98
+#define RCC_PLL2CFGR2		0x9C
+#define RCC_PLL2FRACR		0xA0
+#define RCC_PLL2CSGR		0xA4
+#define RCC_I2C46CKSELR		0xC0
+#define RCC_CPERCKSELR		0xD0
+#define RCC_STGENCKSELR		0xD4
+#define RCC_DDRITFCR		0xD8
+#define RCC_BDCR		0x140
+#define RCC_RDLSICR		0x144
+#define RCC_MP_APB4ENSETR	0x200
+#define RCC_MP_APB5ENSETR	0x208
+#define RCC_MP_AHB5ENSETR	0x210
+#define RCC_MP_AHB6ENSETR	0x218
+#define RCC_OCRDYR		0x808
+#define RCC_DBGCFGR		0x80C
+#define RCC_RCK3SELR		0x820
+#define RCC_RCK4SELR		0x824
+#define RCC_MCUDIVR		0x830
+#define RCC_APB1DIVR		0x834
+#define RCC_APB2DIVR		0x838
+#define RCC_APB3DIVR		0x83C
+#define RCC_PLL3CR		0x880
+#define RCC_PLL3CFGR1		0x884
+#define RCC_PLL3CFGR2		0x888
+#define RCC_PLL3FRACR		0x88C
+#define RCC_PLL3CSGR		0x890
+#define RCC_PLL4CR		0x894
+#define RCC_PLL4CFGR1		0x898
+#define RCC_PLL4CFGR2		0x89C
+#define RCC_PLL4FRACR		0x8A0
+#define RCC_PLL4CSGR		0x8A4
+#define RCC_I2C12CKSELR		0x8C0
+#define RCC_I2C35CKSELR		0x8C4
+#define RCC_UART6CKSELR		0x8E4
+#define RCC_UART24CKSELR	0x8E8
+#define RCC_UART35CKSELR	0x8EC
+#define RCC_UART78CKSELR	0x8F0
+#define RCC_SDMMC12CKSELR	0x8F4
+#define RCC_SDMMC3CKSELR	0x8F8
+#define RCC_ETHCKSELR		0x8FC
+#define RCC_QSPICKSELR		0x900
+#define RCC_FMCCKSELR		0x904
+#define RCC_USBCKSELR		0x91C
+#define RCC_MP_APB1ENSETR	0xA00
+#define RCC_MP_APB2ENSETR	0XA08
+#define RCC_MP_AHB2ENSETR	0xA18
+#define RCC_MP_AHB4ENSETR	0xA28
+
+/* used for most of SELR register */
+#define RCC_SELR_SRC_MASK	GENMASK(2, 0)
+#define RCC_SELR_SRCRDY		BIT(31)
+
+/* Values of RCC_MPCKSELR register */
+#define RCC_MPCKSELR_HSI	0
+#define RCC_MPCKSELR_HSE	1
+#define RCC_MPCKSELR_PLL	2
+#define RCC_MPCKSELR_PLL_MPUDIV	3
+
+/* Values of RCC_ASSCKSELR register */
+#define RCC_ASSCKSELR_HSI	0
+#define RCC_ASSCKSELR_HSE	1
+#define RCC_ASSCKSELR_PLL	2
+
+/* Values of RCC_MSSCKSELR register */
+#define RCC_MSSCKSELR_HSI	0
+#define RCC_MSSCKSELR_HSE	1
+#define RCC_MSSCKSELR_CSI	2
+#define RCC_MSSCKSELR_PLL	3
+
+/* Values of RCC_CPERCKSELR register */
+#define RCC_CPERCKSELR_HSI	0
+#define RCC_CPERCKSELR_CSI	1
+#define RCC_CPERCKSELR_HSE	2
+
+/* used for most of DIVR register : max div for RTC */
+#define RCC_DIVR_DIV_MASK	GENMASK(5, 0)
+#define RCC_DIVR_DIVRDY		BIT(31)
+
+/* Masks for specific DIVR registers */
+#define RCC_APBXDIV_MASK	GENMASK(2, 0)
+#define RCC_MPUDIV_MASK		GENMASK(2, 0)
+#define RCC_AXIDIV_MASK		GENMASK(2, 0)
+#define RCC_MCUDIV_MASK		GENMASK(3, 0)
+
+/*  offset between RCC_MP_xxxENSETR and RCC_MP_xxxENCLRR registers */
+#define RCC_MP_ENCLRR_OFFSET	4
+
+/* Fields of RCC_BDCR register */
+#define RCC_BDCR_LSEON		BIT(0)
+#define RCC_BDCR_LSEBYP		BIT(1)
+#define RCC_BDCR_LSERDY		BIT(2)
+#define RCC_BDCR_LSEDRV_MASK	GENMASK(5, 4)
+#define RCC_BDCR_LSEDRV_SHIFT	4
+#define RCC_BDCR_LSECSSON	BIT(8)
+#define RCC_BDCR_RTCCKEN	BIT(20)
+#define RCC_BDCR_RTCSRC_MASK	GENMASK(17, 16)
+#define RCC_BDCR_RTCSRC_SHIFT	16
+
+/* Fields of RCC_RDLSICR register */
+#define RCC_RDLSICR_LSION	BIT(0)
+#define RCC_RDLSICR_LSIRDY	BIT(1)
+
+/* used for ALL PLLNCR registers */
+#define RCC_PLLNCR_PLLON	BIT(0)
+#define RCC_PLLNCR_PLLRDY	BIT(1)
+#define RCC_PLLNCR_DIVPEN	BIT(4)
+#define RCC_PLLNCR_DIVQEN	BIT(5)
+#define RCC_PLLNCR_DIVREN	BIT(6)
+#define RCC_PLLNCR_DIVEN_SHIFT	4
+
+/* used for ALL PLLNCFGR1 registers */
+#define RCC_PLLNCFGR1_DIVM_SHIFT	16
+#define RCC_PLLNCFGR1_DIVM_MASK		GENMASK(21, 16)
+#define RCC_PLLNCFGR1_DIVN_SHIFT	0
+#define RCC_PLLNCFGR1_DIVN_MASK		GENMASK(8, 0)
+/* only for PLL3 and PLL4 */
+#define RCC_PLLNCFGR1_IFRGE_SHIFT	24
+#define RCC_PLLNCFGR1_IFRGE_MASK	GENMASK(25, 24)
+
+/* used for ALL PLLNCFGR2 registers */
+#define RCC_PLLNCFGR2_DIVX_MASK		GENMASK(6, 0)
+#define RCC_PLLNCFGR2_DIVP_SHIFT	0
+#define RCC_PLLNCFGR2_DIVP_MASK		GENMASK(6, 0)
+#define RCC_PLLNCFGR2_DIVQ_SHIFT	8
+#define RCC_PLLNCFGR2_DIVQ_MASK		GENMASK(14, 8)
+#define RCC_PLLNCFGR2_DIVR_SHIFT	16
+#define RCC_PLLNCFGR2_DIVR_MASK		GENMASK(22, 16)
+
+/* used for ALL PLLNFRACR registers */
+#define RCC_PLLNFRACR_FRACV_SHIFT	3
+#define RCC_PLLNFRACR_FRACV_MASK	GENMASK(15, 3)
+#define RCC_PLLNFRACR_FRACLE		BIT(16)
+
+/* used for ALL PLLNCSGR registers */
+#define RCC_PLLNCSGR_INC_STEP_SHIFT	16
+#define RCC_PLLNCSGR_INC_STEP_MASK	GENMASK(30, 16)
+#define RCC_PLLNCSGR_MOD_PER_SHIFT	0
+#define RCC_PLLNCSGR_MOD_PER_MASK	GENMASK(12, 0)
+#define RCC_PLLNCSGR_SSCG_MODE_SHIFT	15
+#define RCC_PLLNCSGR_SSCG_MODE_MASK	BIT(15)
+
+/* used for RCC_OCENSETR and RCC_OCENCLRR registers */
+#define RCC_OCENR_HSION			BIT(0)
+#define RCC_OCENR_CSION			BIT(4)
+#define RCC_OCENR_HSEON			BIT(8)
+#define RCC_OCENR_HSEBYP		BIT(10)
+#define RCC_OCENR_HSECSSON		BIT(11)
+
+/* Fields of RCC_OCRDYR register */
+#define RCC_OCRDYR_HSIRDY		BIT(0)
+#define RCC_OCRDYR_HSIDIVRDY		BIT(2)
+#define RCC_OCRDYR_CSIRDY		BIT(4)
+#define RCC_OCRDYR_HSERDY		BIT(8)
+
+/* Fields of DDRITFCR register */
+#define RCC_DDRITFCR_DDRCKMOD_MASK	GENMASK(22, 20)
+#define RCC_DDRITFCR_DDRCKMOD_SHIFT	20
+#define RCC_DDRITFCR_DDRCKMOD_SSR	0
+
+/* Fields of RCC_HSICFGR register */
+#define RCC_HSICFGR_HSIDIV_MASK		GENMASK(1, 0)
+
+/* used for MCO related operations */
+#define RCC_MCOCFG_MCOON		BIT(12)
+#define RCC_MCOCFG_MCODIV_MASK		GENMASK(7, 4)
+#define RCC_MCOCFG_MCODIV_SHIFT		4
+#define RCC_MCOCFG_MCOSRC_MASK		GENMASK(2, 0)
+
+enum stm32mp1_parent_id {
+/*
+ * _HSI, _HSE, _CSI, _LSI, _LSE should not be moved
+ * they are used as index in osc[] as entry point
+ */
+	_HSI,
+	_HSE,
+	_CSI,
+	_LSI,
+	_LSE,
+	_I2S_CKIN,
+	_USB_PHY_48,
+	NB_OSC,
+
+/* other parent source */
+	_HSI_KER = NB_OSC,
+	_HSE_KER,
+	_HSE_KER_DIV2,
+	_CSI_KER,
+	_PLL1_P,
+	_PLL1_Q,
+	_PLL1_R,
+	_PLL2_P,
+	_PLL2_Q,
+	_PLL2_R,
+	_PLL3_P,
+	_PLL3_Q,
+	_PLL3_R,
+	_PLL4_P,
+	_PLL4_Q,
+	_PLL4_R,
+	_ACLK,
+	_PCLK1,
+	_PCLK2,
+	_PCLK3,
+	_PCLK4,
+	_PCLK5,
+	_HCLK6,
+	_HCLK2,
+	_CK_PER,
+	_CK_MPU,
+	_CK_MCU,
+	_PARENT_NB,
+	_UNKNOWN_ID = 0xff,
+};
+
+enum stm32mp1_parent_sel {
+	_I2C12_SEL,
+	_I2C35_SEL,
+	_I2C46_SEL,
+	_UART6_SEL,
+	_UART24_SEL,
+	_UART35_SEL,
+	_UART78_SEL,
+	_SDMMC12_SEL,
+	_SDMMC3_SEL,
+	_ETH_SEL,
+	_QSPI_SEL,
+	_FMC_SEL,
+	_USBPHY_SEL,
+	_USBO_SEL,
+	_STGEN_SEL,
+	_PARENT_SEL_NB,
+	_UNKNOWN_SEL = 0xff,
+};
+
+enum stm32mp1_pll_id {
+	_PLL1,
+	_PLL2,
+	_PLL3,
+	_PLL4,
+	_PLL_NB
+};
+
+enum stm32mp1_div_id {
+	_DIV_P,
+	_DIV_Q,
+	_DIV_R,
+	_DIV_NB,
+};
+
+enum stm32mp1_clksrc_id {
+	CLKSRC_MPU,
+	CLKSRC_AXI,
+	CLKSRC_MCU,
+	CLKSRC_PLL12,
+	CLKSRC_PLL3,
+	CLKSRC_PLL4,
+	CLKSRC_RTC,
+	CLKSRC_MCO1,
+	CLKSRC_MCO2,
+	CLKSRC_NB
+};
+
+enum stm32mp1_clkdiv_id {
+	CLKDIV_MPU,
+	CLKDIV_AXI,
+	CLKDIV_MCU,
+	CLKDIV_APB1,
+	CLKDIV_APB2,
+	CLKDIV_APB3,
+	CLKDIV_APB4,
+	CLKDIV_APB5,
+	CLKDIV_RTC,
+	CLKDIV_MCO1,
+	CLKDIV_MCO2,
+	CLKDIV_NB
+};
+
+enum stm32mp1_pllcfg {
+	PLLCFG_M,
+	PLLCFG_N,
+	PLLCFG_P,
+	PLLCFG_Q,
+	PLLCFG_R,
+	PLLCFG_O,
+	PLLCFG_NB
+};
+
+enum stm32mp1_pllcsg {
+	PLLCSG_MOD_PER,
+	PLLCSG_INC_STEP,
+	PLLCSG_SSCG_MODE,
+	PLLCSG_NB
+};
+
+enum stm32mp1_plltype {
+	PLL_800,
+	PLL_1600,
+	PLL_TYPE_NB
+};
+
+struct stm32mp1_pll {
+	u8 refclk_min;
+	u8 refclk_max;
+	u8 divn_max;
+};
+
+struct stm32mp1_clk_gate {
+	u16 offset;
+	u8 bit;
+	u8 index;
+	u8 set_clr;
+	u8 sel;
+	u8 fixed;
+};
+
+struct stm32mp1_clk_sel {
+	u16 offset;
+	u8 src;
+	u8 msk;
+	u8 nb_parent;
+	const u8 *parent;
+};
+
+#define REFCLK_SIZE 4
+struct stm32mp1_clk_pll {
+	enum stm32mp1_plltype plltype;
+	u16 rckxselr;
+	u16 pllxcfgr1;
+	u16 pllxcfgr2;
+	u16 pllxfracr;
+	u16 pllxcr;
+	u16 pllxcsgr;
+	u8 refclk[REFCLK_SIZE];
+};
+
+struct stm32mp1_clk_data {
+	const struct stm32mp1_clk_gate *gate;
+	const struct stm32mp1_clk_sel *sel;
+	const struct stm32mp1_clk_pll *pll;
+	const int nb_gate;
+};
+
+struct stm32mp1_clk_priv {
+	fdt_addr_t base;
+	const struct stm32mp1_clk_data *data;
+	ulong osc[NB_OSC];
+	struct udevice *osc_dev[NB_OSC];
+};
+
+#define STM32MP1_CLK(off, b, idx, s)		\
+	{					\
+		.offset = (off),		\
+		.bit = (b),			\
+		.index = (idx),			\
+		.set_clr = 0,			\
+		.sel = (s),			\
+		.fixed = _UNKNOWN_ID,		\
+	}
+
+#define STM32MP1_CLK_F(off, b, idx, f)		\
+	{					\
+		.offset = (off),		\
+		.bit = (b),			\
+		.index = (idx),			\
+		.set_clr = 0,			\
+		.sel = _UNKNOWN_SEL,		\
+		.fixed = (f),			\
+	}
+
+#define STM32MP1_CLK_SET_CLR(off, b, idx, s)	\
+	{					\
+		.offset = (off),		\
+		.bit = (b),			\
+		.index = (idx),			\
+		.set_clr = 1,			\
+		.sel = (s),			\
+		.fixed = _UNKNOWN_ID,		\
+	}
+
+#define STM32MP1_CLK_SET_CLR_F(off, b, idx, f)	\
+	{					\
+		.offset = (off),		\
+		.bit = (b),			\
+		.index = (idx),			\
+		.set_clr = 1,			\
+		.sel = _UNKNOWN_SEL,		\
+		.fixed = (f),			\
+	}
+
+#define STM32MP1_CLK_PARENT(idx, off, s, m, p)   \
+	[(idx)] = {				\
+		.offset = (off),		\
+		.src = (s),			\
+		.msk = (m),			\
+		.parent = (p),			\
+		.nb_parent = ARRAY_SIZE((p))	\
+	}
+
+#define STM32MP1_CLK_PLL(idx, type, off1, off2, off3, off4, off5, off6,\
+			p1, p2, p3, p4) \
+	[(idx)] = {				\
+		.plltype = (type),			\
+		.rckxselr = (off1),		\
+		.pllxcfgr1 = (off2),		\
+		.pllxcfgr2 = (off3),		\
+		.pllxfracr = (off4),		\
+		.pllxcr = (off5),		\
+		.pllxcsgr = (off6),		\
+		.refclk[0] = (p1),		\
+		.refclk[1] = (p2),		\
+		.refclk[2] = (p3),		\
+		.refclk[3] = (p4),		\
+	}
+
+static const u8 stm32mp1_clks[][2] = {
+	{CK_PER, _CK_PER},
+	{CK_MPU, _CK_MPU},
+	{CK_AXI, _ACLK},
+	{CK_MCU, _CK_MCU},
+	{CK_HSE, _HSE},
+	{CK_CSI, _CSI},
+	{CK_LSI, _LSI},
+	{CK_LSE, _LSE},
+	{CK_HSI, _HSI},
+	{CK_HSE_DIV2, _HSE_KER_DIV2},
+};
+
+static const struct stm32mp1_clk_gate stm32mp1_clk_gate[] = {
+	STM32MP1_CLK(RCC_DDRITFCR, 0, DDRC1, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 1, DDRC1LP, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 2, DDRC2, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 3, DDRC2LP, _UNKNOWN_SEL),
+	STM32MP1_CLK_F(RCC_DDRITFCR, 4, DDRPHYC, _PLL2_R),
+	STM32MP1_CLK(RCC_DDRITFCR, 5, DDRPHYCLP, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 6, DDRCAPB, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 7, DDRCAPBLP, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 8, AXIDCG, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 9, DDRPHYCAPB, _UNKNOWN_SEL),
+	STM32MP1_CLK(RCC_DDRITFCR, 10, DDRPHYCAPBLP, _UNKNOWN_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),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 17, UART5_K, _UART35_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 18, UART7_K, _UART78_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 19, UART8_K, _UART78_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 21, I2C1_K, _I2C12_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 22, I2C2_K, _I2C12_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 23, I2C3_K, _I2C35_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB1ENSETR, 24, I2C5_K, _I2C35_SEL),
+
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB2ENSETR, 13, USART6_K, _UART6_SEL),
+
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB4ENSETR, 8, DDRPERFM, _UNKNOWN_SEL),
+	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, 2, I2C4_K, _I2C46_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_APB5ENSETR, 20, STGEN_K, _STGEN_SEL),
+
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB2ENSETR, 8, USBO_K, _USBO_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB2ENSETR, 16, SDMMC3_K, _SDMMC3_SEL),
+
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 0, GPIOA, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 1, GPIOB, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 2, GPIOC, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 3, GPIOD, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 4, GPIOE, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 5, GPIOF, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 6, GPIOG, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 7, GPIOH, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 8, GPIOI, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 9, GPIOJ, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB4ENSETR, 10, GPIOK, _UNKNOWN_SEL),
+
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB5ENSETR, 0, GPIOZ, _UNKNOWN_SEL),
+
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 7, ETHCK, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 8, ETHTX, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 9, ETHRX, _UNKNOWN_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 10, ETHMAC_K, _ETH_SEL),
+	STM32MP1_CLK_SET_CLR_F(RCC_MP_AHB6ENSETR, 10, ETHMAC, _ACLK),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 12, FMC_K, _FMC_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 14, QSPI_K, _QSPI_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 16, SDMMC1_K, _SDMMC12_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 17, SDMMC2_K, _SDMMC12_SEL),
+	STM32MP1_CLK_SET_CLR(RCC_MP_AHB6ENSETR, 24, USBH, _UNKNOWN_SEL),
+
+	STM32MP1_CLK(RCC_DBGCFGR, 8, CK_DBG, _UNKNOWN_SEL),
+};
+
+static const u8 i2c12_parents[] = {_PCLK1, _PLL4_R, _HSI_KER, _CSI_KER};
+static const u8 i2c35_parents[] = {_PCLK1, _PLL4_R, _HSI_KER, _CSI_KER};
+static const u8 i2c46_parents[] = {_PCLK5, _PLL3_Q, _HSI_KER, _CSI_KER};
+static const u8 uart6_parents[] = {_PCLK2, _PLL4_Q, _HSI_KER, _CSI_KER,
+					_HSE_KER};
+static const u8 uart24_parents[] = {_PCLK1, _PLL4_Q, _HSI_KER, _CSI_KER,
+					 _HSE_KER};
+static const u8 uart35_parents[] = {_PCLK1, _PLL4_Q, _HSI_KER, _CSI_KER,
+					 _HSE_KER};
+static const u8 uart78_parents[] = {_PCLK1, _PLL4_Q, _HSI_KER, _CSI_KER,
+					 _HSE_KER};
+static const u8 sdmmc12_parents[] = {_HCLK6, _PLL3_R, _PLL4_P, _HSI_KER};
+static const u8 sdmmc3_parents[] = {_HCLK2, _PLL3_R, _PLL4_P, _HSI_KER};
+static const u8 eth_parents[] = {_PLL4_P, _PLL3_Q};
+static const u8 qspi_parents[] = {_ACLK, _PLL3_R, _PLL4_P, _CK_PER};
+static const u8 fmc_parents[] = {_ACLK, _PLL3_R, _PLL4_P, _CK_PER};
+static const u8 usbphy_parents[] = {_HSE_KER, _PLL4_R, _HSE_KER_DIV2};
+static const u8 usbo_parents[] = {_PLL4_R, _USB_PHY_48};
+static const u8 stgen_parents[] = {_HSI_KER, _HSE_KER};
+
+static const struct stm32mp1_clk_sel stm32mp1_clk_sel[_PARENT_SEL_NB] = {
+	STM32MP1_CLK_PARENT(_I2C12_SEL, RCC_I2C12CKSELR, 0, 0x7, i2c12_parents),
+	STM32MP1_CLK_PARENT(_I2C35_SEL, RCC_I2C35CKSELR, 0, 0x7, i2c35_parents),
+	STM32MP1_CLK_PARENT(_I2C46_SEL, RCC_I2C46CKSELR, 0, 0x7, i2c46_parents),
+	STM32MP1_CLK_PARENT(_UART6_SEL, RCC_UART6CKSELR, 0, 0x7, uart6_parents),
+	STM32MP1_CLK_PARENT(_UART24_SEL, RCC_UART24CKSELR, 0, 0x7,
+			    uart24_parents),
+	STM32MP1_CLK_PARENT(_UART35_SEL, RCC_UART35CKSELR, 0, 0x7,
+			    uart35_parents),
+	STM32MP1_CLK_PARENT(_UART78_SEL, RCC_UART78CKSELR, 0, 0x7,
+			    uart78_parents),
+	STM32MP1_CLK_PARENT(_SDMMC12_SEL, RCC_SDMMC12CKSELR, 0, 0x7,
+			    sdmmc12_parents),
+	STM32MP1_CLK_PARENT(_SDMMC3_SEL, RCC_SDMMC3CKSELR, 0, 0x7,
+			    sdmmc3_parents),
+	STM32MP1_CLK_PARENT(_ETH_SEL, RCC_ETHCKSELR, 0, 0x3, eth_parents),
+	STM32MP1_CLK_PARENT(_QSPI_SEL, RCC_QSPICKSELR, 0, 0xf, qspi_parents),
+	STM32MP1_CLK_PARENT(_FMC_SEL, RCC_FMCCKSELR, 0, 0xf, fmc_parents),
+	STM32MP1_CLK_PARENT(_USBPHY_SEL, RCC_USBCKSELR, 0, 0x3, usbphy_parents),
+	STM32MP1_CLK_PARENT(_USBO_SEL, RCC_USBCKSELR, 4, 0x1, usbo_parents),
+	STM32MP1_CLK_PARENT(_STGEN_SEL, RCC_STGENCKSELR, 0, 0x3, stgen_parents),
+};
+
+#ifdef STM32MP1_CLOCK_TREE_INIT
+/* define characteristic of PLL according type */
+#define DIVN_MIN	24
+static const struct stm32mp1_pll stm32mp1_pll[PLL_TYPE_NB] = {
+	[PLL_800] = {
+		.refclk_min = 4,
+		.refclk_max = 16,
+		.divn_max = 99,
+		},
+	[PLL_1600] = {
+		.refclk_min = 8,
+		.refclk_max = 16,
+		.divn_max = 199,
+		},
+};
+#endif /* STM32MP1_CLOCK_TREE_INIT */
+
+static const struct stm32mp1_clk_pll stm32mp1_clk_pll[_PLL_NB] = {
+	STM32MP1_CLK_PLL(_PLL1, PLL_1600,
+			 RCC_RCK12SELR, RCC_PLL1CFGR1, RCC_PLL1CFGR2,
+			 RCC_PLL1FRACR, RCC_PLL1CR, RCC_PLL1CSGR,
+			 _HSI, _HSE, _UNKNOWN_ID, _UNKNOWN_ID),
+	STM32MP1_CLK_PLL(_PLL2, PLL_1600,
+			 RCC_RCK12SELR, RCC_PLL2CFGR1, RCC_PLL2CFGR2,
+			 RCC_PLL2FRACR, RCC_PLL2CR, RCC_PLL2CSGR,
+			 _HSI, _HSE, _UNKNOWN_ID, _UNKNOWN_ID),
+	STM32MP1_CLK_PLL(_PLL3, PLL_800,
+			 RCC_RCK3SELR, RCC_PLL3CFGR1, RCC_PLL3CFGR2,
+			 RCC_PLL3FRACR, RCC_PLL3CR, RCC_PLL3CSGR,
+			 _HSI, _HSE, _CSI, _UNKNOWN_ID),
+	STM32MP1_CLK_PLL(_PLL4, PLL_800,
+			 RCC_RCK4SELR, RCC_PLL4CFGR1, RCC_PLL4CFGR2,
+			 RCC_PLL4FRACR, RCC_PLL4CR, RCC_PLL4CSGR,
+			 _HSI, _HSE, _CSI, _I2S_CKIN),
+};
+
+/* Prescaler table lookups for clock computation */
+/* div = /1 /2 /4 /8 / 16 /64 /128 /512 */
+static const u8 stm32mp1_mcu_div[16] = {
+	0, 1, 2, 3, 4, 6, 7, 8, 9, 9, 9, 9, 9, 9, 9, 9
+};
+
+/* div = /1 /2 /4 /8 /16 : same divider for pmu and apbx*/
+#define stm32mp1_mpu_div stm32mp1_mpu_apbx_div
+#define stm32mp1_apbx_div stm32mp1_mpu_apbx_div
+static const u8 stm32mp1_mpu_apbx_div[8] = {
+	0, 1, 2, 3, 4, 4, 4, 4
+};
+
+/* div = /1 /2 /3 /4 */
+static const u8 stm32mp1_axi_div[8] = {
+	1, 2, 3, 4, 4, 4, 4, 4
+};
+
+#ifdef DEBUG
+static const char * const stm32mp1_clk_parent_name[_PARENT_NB] = {
+	[_HSI] = "HSI",
+	[_HSE] = "HSE",
+	[_CSI] = "CSI",
+	[_LSI] = "LSI",
+	[_LSE] = "LSE",
+	[_I2S_CKIN] = "I2S_CKIN",
+	[_HSI_KER] = "HSI_KER",
+	[_HSE_KER] = "HSE_KER",
+	[_HSE_KER_DIV2] = "HSE_KER_DIV2",
+	[_CSI_KER] = "CSI_KER",
+	[_PLL1_P] = "PLL1_P",
+	[_PLL1_Q] = "PLL1_Q",
+	[_PLL1_R] = "PLL1_R",
+	[_PLL2_P] = "PLL2_P",
+	[_PLL2_Q] = "PLL2_Q",
+	[_PLL2_R] = "PLL2_R",
+	[_PLL3_P] = "PLL3_P",
+	[_PLL3_Q] = "PLL3_Q",
+	[_PLL3_R] = "PLL3_R",
+	[_PLL4_P] = "PLL4_P",
+	[_PLL4_Q] = "PLL4_Q",
+	[_PLL4_R] = "PLL4_R",
+	[_ACLK] = "ACLK",
+	[_PCLK1] = "PCLK1",
+	[_PCLK2] = "PCLK2",
+	[_PCLK3] = "PCLK3",
+	[_PCLK4] = "PCLK4",
+	[_PCLK5] = "PCLK5",
+	[_HCLK6] = "KCLK6",
+	[_HCLK2] = "HCLK2",
+	[_CK_PER] = "CK_PER",
+	[_CK_MPU] = "CK_MPU",
+	[_CK_MCU] = "CK_MCU",
+	[_USB_PHY_48] = "USB_PHY_48"
+};
+
+static const char * const stm32mp1_clk_parent_sel_name[_PARENT_SEL_NB] = {
+	[_I2C12_SEL] = "I2C12",
+	[_I2C35_SEL] = "I2C35",
+	[_I2C46_SEL] = "I2C46",
+	[_UART6_SEL] = "UART6",
+	[_UART24_SEL] = "UART24",
+	[_UART35_SEL] = "UART35",
+	[_UART78_SEL] = "UART78",
+	[_SDMMC12_SEL] = "SDMMC12",
+	[_SDMMC3_SEL] = "SDMMC3",
+	[_ETH_SEL] = "ETH",
+	[_QSPI_SEL] = "QSPI",
+	[_FMC_SEL] = "FMC",
+	[_USBPHY_SEL] = "USBPHY",
+	[_USBO_SEL] = "USBO",
+	[_STGEN_SEL] = "STGEN"
+};
+#endif
+
+static const struct stm32mp1_clk_data stm32mp1_data = {
+	.gate = stm32mp1_clk_gate,
+	.sel = stm32mp1_clk_sel,
+	.pll = stm32mp1_clk_pll,
+	.nb_gate = ARRAY_SIZE(stm32mp1_clk_gate),
+};
+
+static ulong stm32mp1_clk_get_fixed(struct stm32mp1_clk_priv *priv, int idx)
+{
+	if (idx >= NB_OSC) {
+		debug("%s: clk id %d not found\n", __func__, idx);
+		return 0;
+	}
+
+	debug("%s: clk id %d = %x : %ld kHz\n", __func__, idx,
+	      (u32)priv->osc[idx], priv->osc[idx] / 1000);
+
+	return priv->osc[idx];
+}
+
+static int stm32mp1_clk_get_id(struct stm32mp1_clk_priv *priv, unsigned long id)
+{
+	const struct stm32mp1_clk_gate *gate = priv->data->gate;
+	int i, nb_clks = priv->data->nb_gate;
+
+	for (i = 0; i < nb_clks; i++) {
+		if (gate[i].index == id)
+			break;
+	}
+
+	if (i == nb_clks) {
+		printf("%s: clk id %d not found\n", __func__, (u32)id);
+		return -EINVAL;
+	}
+
+	return i;
+}
+
+static int stm32mp1_clk_get_sel(struct stm32mp1_clk_priv *priv,
+				int i)
+{
+	const struct stm32mp1_clk_gate *gate = priv->data->gate;
+
+	if (gate[i].sel > _PARENT_SEL_NB) {
+		printf("%s: parents for clk id %d not found\n",
+		       __func__, i);
+		return -EINVAL;
+	}
+
+	return gate[i].sel;
+}
+
+static int stm32mp1_clk_get_fixed_parent(struct stm32mp1_clk_priv *priv,
+					 int i)
+{
+	const struct stm32mp1_clk_gate *gate = priv->data->gate;
+
+	if (gate[i].fixed == _UNKNOWN_ID)
+		return -ENOENT;
+
+	return gate[i].fixed;
+}
+
+static int stm32mp1_clk_get_parent(struct stm32mp1_clk_priv *priv,
+				   unsigned long id)
+{
+	const struct stm32mp1_clk_sel *sel = priv->data->sel;
+	int i;
+	int s, p;
+
+	for (i = 0; i < ARRAY_SIZE(stm32mp1_clks); i++)
+		if (stm32mp1_clks[i][0] == id)
+			return stm32mp1_clks[i][1];
+
+	i = stm32mp1_clk_get_id(priv, id);
+	if (i < 0)
+		return i;
+
+	p = stm32mp1_clk_get_fixed_parent(priv, i);
+	if (p >= 0 && p < _PARENT_NB)
+		return p;
+
+	s = stm32mp1_clk_get_sel(priv, i);
+	if (s < 0)
+		return s;
+
+	p = (readl(priv->base + sel[s].offset) >> sel[s].src) & sel[s].msk;
+
+	if (p < sel[s].nb_parent) {
+#ifdef DEBUG
+		debug("%s: %s clock is the parent %s of clk id %d\n", __func__,
+		      stm32mp1_clk_parent_name[sel[s].parent[p]],
+		      stm32mp1_clk_parent_sel_name[s],
+		      (u32)id);
+#endif
+		return sel[s].parent[p];
+	}
+
+	pr_err("%s: no parents defined for clk id %d\n",
+	       __func__, (u32)id);
+
+	return -EINVAL;
+}
+
+static ulong stm32mp1_read_pll_freq(struct stm32mp1_clk_priv *priv,
+				    int pll_id, int div_id)
+{
+	const struct stm32mp1_clk_pll *pll = priv->data->pll;
+	int divm, divn, divy, src;
+	ulong refclk, dfout;
+	u32 selr, cfgr1, cfgr2, fracr;
+	const u8 shift[_DIV_NB] = {
+		[_DIV_P] = RCC_PLLNCFGR2_DIVP_SHIFT,
+		[_DIV_Q] = RCC_PLLNCFGR2_DIVQ_SHIFT,
+		[_DIV_R] = RCC_PLLNCFGR2_DIVR_SHIFT };
+
+	debug("%s(%d, %d)\n", __func__, pll_id, div_id);
+	if (div_id > _DIV_NB)
+		return 0;
+
+	selr = readl(priv->base + pll[pll_id].rckxselr);
+	cfgr1 = readl(priv->base + pll[pll_id].pllxcfgr1);
+	cfgr2 = readl(priv->base + pll[pll_id].pllxcfgr2);
+	fracr = readl(priv->base + pll[pll_id].pllxfracr);
+
+	debug("PLL%d : selr=%x cfgr1=%x cfgr2=%x fracr=%x\n",
+	      pll_id, selr, cfgr1, cfgr2, fracr);
+
+	divm = (cfgr1 & (RCC_PLLNCFGR1_DIVM_MASK)) >> RCC_PLLNCFGR1_DIVM_SHIFT;
+	divn = cfgr1 & RCC_PLLNCFGR1_DIVN_MASK;
+	divy = (cfgr2 >> shift[div_id]) & RCC_PLLNCFGR2_DIVX_MASK;
+
+	debug("        DIVN=%d DIVM=%d DIVY=%d\n", divn, divm, divy);
+
+	src = selr & RCC_SELR_SRC_MASK;
+	refclk = stm32mp1_clk_get_fixed(priv, pll[pll_id].refclk[src]);
+
+	debug("        refclk = %d kHz\n", (u32)(refclk / 1000));
+
+	/*
+	 * For: PLL1 & PLL2 => VCO is * 2 but ck_pll_y is also / 2
+	 * So same final result than PLL2 et 4
+	 * with FRACV :
+	 *   Fck_pll_y = Fck_ref * ((DIVN + 1) + FRACV / 2^13)
+	 *               / (DIVM + 1) * (DIVy + 1)
+	 * without FRACV
+	 *   Fck_pll_y = Fck_ref * ((DIVN + 1) / (DIVM + 1) *(DIVy + 1)
+	 */
+	if (fracr & RCC_PLLNFRACR_FRACLE) {
+		u32 fracv = (fracr & RCC_PLLNFRACR_FRACV_MASK)
+			    >> RCC_PLLNFRACR_FRACV_SHIFT;
+		dfout = (ulong)lldiv((unsigned long long)refclk *
+				     (((divn + 1) << 13) + fracv),
+				     ((unsigned long long)(divm + 1) *
+				      (divy + 1)) << 13);
+	} else {
+		dfout = (ulong)(refclk * (divn + 1) / (divm + 1) * (divy + 1));
+	}
+	debug("        => dfout = %d kHz\n", (u32)(dfout / 1000));
+
+	return dfout;
+}
+
+static ulong stm32mp1_clk_get(struct stm32mp1_clk_priv *priv, int p)
+{
+	u32 reg;
+	ulong clock = 0;
+
+	switch (p) {
+	case _CK_MPU:
+	/* MPU sub system */
+		reg = readl(priv->base + RCC_MPCKSELR);
+		switch (reg & RCC_SELR_SRC_MASK) {
+		case RCC_MPCKSELR_HSI:
+			clock = stm32mp1_clk_get_fixed(priv, _HSI);
+			break;
+		case RCC_MPCKSELR_HSE:
+			clock = stm32mp1_clk_get_fixed(priv, _HSE);
+			break;
+		case RCC_MPCKSELR_PLL:
+		case RCC_MPCKSELR_PLL_MPUDIV:
+			clock = stm32mp1_read_pll_freq(priv, _PLL1, _DIV_P);
+			if (p == RCC_MPCKSELR_PLL_MPUDIV) {
+				reg = readl(priv->base + RCC_MPCKDIVR);
+				clock /= stm32mp1_mpu_div[reg &
+							  RCC_MPUDIV_MASK];
+			}
+			break;
+		}
+		break;
+	/* AXI sub system */
+	case _ACLK:
+	case _HCLK2:
+	case _HCLK6:
+	case _PCLK4:
+	case _PCLK5:
+		reg = readl(priv->base + RCC_ASSCKSELR);
+		switch (reg & RCC_SELR_SRC_MASK) {
+		case RCC_ASSCKSELR_HSI:
+			clock = stm32mp1_clk_get_fixed(priv, _HSI);
+			break;
+		case RCC_ASSCKSELR_HSE:
+			clock = stm32mp1_clk_get_fixed(priv, _HSE);
+			break;
+		case RCC_ASSCKSELR_PLL:
+			clock = stm32mp1_read_pll_freq(priv, _PLL2, _DIV_P);
+			break;
+		}
+
+		/* System clock divider */
+		reg = readl(priv->base + RCC_AXIDIVR);
+		clock /= stm32mp1_axi_div[reg & RCC_AXIDIV_MASK];
+
+		switch (p) {
+		case _PCLK4:
+			reg = readl(priv->base + RCC_APB4DIVR);
+			clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
+			break;
+		case _PCLK5:
+			reg = readl(priv->base + RCC_APB5DIVR);
+			clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
+			break;
+		default:
+			break;
+		}
+		break;
+	/* MCU sub system */
+	case _CK_MCU:
+	case _PCLK1:
+	case _PCLK2:
+	case _PCLK3:
+		reg = readl(priv->base + RCC_MSSCKSELR);
+		switch (reg & RCC_SELR_SRC_MASK) {
+		case RCC_MSSCKSELR_HSI:
+			clock = stm32mp1_clk_get_fixed(priv, _HSI);
+			break;
+		case RCC_MSSCKSELR_HSE:
+			clock = stm32mp1_clk_get_fixed(priv, _HSE);
+			break;
+		case RCC_MSSCKSELR_CSI:
+			clock = stm32mp1_clk_get_fixed(priv, _CSI);
+			break;
+		case RCC_MSSCKSELR_PLL:
+			clock = stm32mp1_read_pll_freq(priv, _PLL3, _DIV_P);
+			break;
+		}
+
+		/* MCU clock divider */
+		reg = readl(priv->base + RCC_MCUDIVR);
+		clock >>= stm32mp1_mcu_div[reg & RCC_MCUDIV_MASK];
+
+		switch (p) {
+		case _PCLK1:
+			reg = readl(priv->base + RCC_APB1DIVR);
+			clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
+			break;
+		case _PCLK2:
+			reg = readl(priv->base + RCC_APB2DIVR);
+			clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
+			break;
+		case _PCLK3:
+			reg = readl(priv->base + RCC_APB3DIVR);
+			clock >>= stm32mp1_apbx_div[reg & RCC_APBXDIV_MASK];
+			break;
+		case _CK_MCU:
+		default:
+			break;
+		}
+		break;
+	case _CK_PER:
+		reg = readl(priv->base + RCC_CPERCKSELR);
+		switch (reg & RCC_SELR_SRC_MASK) {
+		case RCC_CPERCKSELR_HSI:
+			clock = stm32mp1_clk_get_fixed(priv, _HSI);
+			break;
+		case RCC_CPERCKSELR_HSE:
+			clock = stm32mp1_clk_get_fixed(priv, _HSE);
+			break;
+		case RCC_CPERCKSELR_CSI:
+			clock = stm32mp1_clk_get_fixed(priv, _CSI);
+			break;
+		}
+		break;
+	case _HSI:
+	case _HSI_KER:
+		clock = stm32mp1_clk_get_fixed(priv, _HSI);
+		break;
+	case _CSI:
+	case _CSI_KER:
+		clock = stm32mp1_clk_get_fixed(priv, _CSI);
+		break;
+	case _HSE:
+	case _HSE_KER:
+	case _HSE_KER_DIV2:
+		clock = stm32mp1_clk_get_fixed(priv, _HSE);
+		if (p == _HSE_KER_DIV2)
+			clock >>= 1;
+		break;
+	case _LSI:
+		clock = stm32mp1_clk_get_fixed(priv, _LSI);
+		break;
+	case _LSE:
+		clock = stm32mp1_clk_get_fixed(priv, _LSE);
+		break;
+	/* PLL */
+	case _PLL1_P:
+	case _PLL1_Q:
+	case _PLL1_R:
+		clock = stm32mp1_read_pll_freq(priv, _PLL1, p - _PLL1_P);
+		break;
+	case _PLL2_P:
+	case _PLL2_Q:
+	case _PLL2_R:
+		clock = stm32mp1_read_pll_freq(priv, _PLL2, p - _PLL2_P);
+		break;
+	case _PLL3_P:
+	case _PLL3_Q:
+	case _PLL3_R:
+		clock = stm32mp1_read_pll_freq(priv, _PLL3, p - _PLL3_P);
+		break;
+	case _PLL4_P:
+	case _PLL4_Q:
+	case _PLL4_R:
+		clock = stm32mp1_read_pll_freq(priv, _PLL4, p - _PLL4_P);
+		break;
+	/* other */
+	case _USB_PHY_48:
+		clock = stm32mp1_clk_get_fixed(priv, _USB_PHY_48);
+		break;
+
+	default:
+		break;
+	}
+
+	debug("%s(%d) clock = %lx : %ld kHz\n",
+	      __func__, p, clock, clock / 1000);
+
+	return clock;
+}
+
+static int stm32mp1_clk_enable(struct clk *clk)
+{
+	struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
+	const struct stm32mp1_clk_gate *gate = priv->data->gate;
+	int i = stm32mp1_clk_get_id(priv, clk->id);
+
+	if (i < 0)
+		return i;
+
+	if (gate[i].set_clr)
+		writel(BIT(gate[i].bit), priv->base + gate[i].offset);
+	else
+		setbits_le32(priv->base + gate[i].offset, BIT(gate[i].bit));
+
+	debug("%s: id clock %d has been enabled\n", __func__, (u32)clk->id);
+
+	return 0;
+}
+
+static int stm32mp1_clk_disable(struct clk *clk)
+{
+	struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
+	const struct stm32mp1_clk_gate *gate = priv->data->gate;
+	int i = stm32mp1_clk_get_id(priv, clk->id);
+
+	if (i < 0)
+		return i;
+
+	if (gate[i].set_clr)
+		writel(BIT(gate[i].bit),
+		       priv->base + gate[i].offset
+		       + RCC_MP_ENCLRR_OFFSET);
+	else
+		clrbits_le32(priv->base + gate[i].offset, BIT(gate[i].bit));
+
+	debug("%s: id clock %d has been disabled\n", __func__, (u32)clk->id);
+
+	return 0;
+}
+
+static ulong stm32mp1_clk_get_rate(struct clk *clk)
+{
+	struct stm32mp1_clk_priv *priv = dev_get_priv(clk->dev);
+	int p = stm32mp1_clk_get_parent(priv, clk->id);
+	ulong rate;
+
+	if (p < 0)
+		return 0;
+
+	rate = stm32mp1_clk_get(priv, p);
+
+#ifdef DEBUG
+	debug("%s: computed rate for id clock %d is %d (parent is %s)\n",
+	      __func__, (u32)clk->id, (u32)rate, stm32mp1_clk_parent_name[p]);
+#endif
+	return rate;
+}
+
+static void stm32mp1_osc_clk_init(const char *name,
+				  struct stm32mp1_clk_priv *priv,
+				  int index)
+{
+	struct clk clk;
+	struct udevice *dev = NULL;
+
+	priv->osc[index] = 0;
+	clk.id = 0;
+	if (!uclass_get_device_by_name(UCLASS_CLK, name, &dev)) {
+		if (clk_request(dev, &clk))
+			pr_err("%s request", name);
+		else
+			priv->osc[index] = clk_get_rate(&clk);
+	}
+	priv->osc_dev[index] = dev;
+}
+
+static void stm32mp1_osc_init(struct udevice *dev)
+{
+	struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
+	int i;
+	const char *name[NB_OSC] = {
+		[_LSI] = "clk-lsi",
+		[_LSE] = "clk-lse",
+		[_HSI] = "clk-hsi",
+		[_HSE] = "clk-hse",
+		[_CSI] = "clk-csi",
+		[_I2S_CKIN] = "i2s_ckin",
+		[_USB_PHY_48] = "ck_usbo_48m"};
+
+	for (i = 0; i < NB_OSC; i++) {
+		stm32mp1_osc_clk_init(name[i], priv, i);
+		debug("%d: %s => %x\n", i, name[i], (u32)priv->osc[i]);
+	}
+}
+
+static int stm32mp1_clk_probe(struct udevice *dev)
+{
+	int result = 0;
+	struct stm32mp1_clk_priv *priv = dev_get_priv(dev);
+
+	priv->base = dev_read_addr(dev->parent);
+	if (priv->base == FDT_ADDR_T_NONE)
+		return -EINVAL;
+
+	priv->data = (void *)&stm32mp1_data;
+
+	if (!priv->data->gate || !priv->data->sel ||
+	    !priv->data->pll)
+		return -EINVAL;
+
+	stm32mp1_osc_init(dev);
+
+	return result;
+}
+
+static const struct clk_ops stm32mp1_clk_ops = {
+	.enable = stm32mp1_clk_enable,
+	.disable = stm32mp1_clk_disable,
+	.get_rate = stm32mp1_clk_get_rate,
+};
+
+static const struct udevice_id stm32mp1_clk_ids[] = {
+	{ .compatible = "st,stm32mp1-rcc-clk" },
+	{ }
+};
+
+U_BOOT_DRIVER(stm32mp1_clock) = {
+	.name = "stm32mp1_clk",
+	.id = UCLASS_CLK,
+	.of_match = stm32mp1_clk_ids,
+	.ops = &stm32mp1_clk_ops,
+	.priv_auto_alloc_size = sizeof(struct stm32mp1_clk_priv),
+	.probe = stm32mp1_clk_probe,
+};