MLK-20528-1 imx8: Add lpcg driver for iMX8QM/QXP

Each module may have one or more lpcg registers for SW/HW enabling its
clocks. Add lpcg register address and its driver for accessing lpcg.

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 19f234266e07c18ab8364336779bf2d3d1f51c81)

4 files changed, 509 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-imx8/imx8qm_lpcg.h b/arch/arm/include/asm/arch-imx8/imx8qm_lpcg.h
new file mode 100644
index 0000000000..692c27f7d3
--- /dev/null
+++ b/arch/arm/include/asm/arch-imx8/imx8qm_lpcg.h
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2018 NXP
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _SC_LPCG_H
+#define _SC_LPCG_H
+
+/*LSIO SS */
+#define		PWM_0_LPCG		0x5D400000
+#define		PWM_1_LPCG		0x5D410000
+#define		PWM_2_LPCG		0x5D420000
+#define		PWM_3_LPCG		0x5D430000
+#define		PWM_4_LPCG		0x5D440000
+#define		PWM_5_LPCG		0x5D450000
+#define		PWM_6_LPCG		0x5D460000
+#define		PWM_7_LPCG		0x5D470000
+#define		GPIO_0_LPCG		0x5D480000
+#define		GPIO_1_LPCG		0x5D490000
+#define		GPIO_2_LPCG		0x5D4A0000
+#define		GPIO_3_LPCG		0x5D4B0000
+#define		GPIO_4_LPCG		0x5D4C0000
+#define		GPIO_5_LPCG		0x5D4D0000
+#define		GPIO_6_LPCG		0x5D4E0000
+#define		GPIO_7_LPCG		0x5D4F0000
+#define		FSPI_0_LPCG		0x5D520000
+#define		FSPI_1_LPCG		0x5D530000
+#define		GPT_0_LPCG		0x5D540000
+#define		GPT_1_LPCG		0x5D550000
+#define		GPT_2_LPCG		0x5D560000
+#define		GPT_3_LPCG		0x5D570000
+#define		GPT_4_LPCG		0x5D580000
+#define		OCRAM_LPCG		0x5D590000
+#define		KPP_LPCG		0x5D5A0000
+#define		MU_5A_LPCG		0x5D600000
+#define		MU_6A_LPCG		0x5D610000
+#define		MU_7A_LPCG		0x5D620000
+#define		MU_8A_LPCG		0x5D630000
+#define		MU_9A_LPCG		0x5D640000
+#define		MU_10A_LPCG		0x5D650000
+#define		MU_11A_LPCG		0x5D660000
+#define		MU_12A_LPCG		0x5D670000
+#define		MU_13A_LPCG		0x5D680000
+
+/* HSIO SS */
+#define		CRR_5_LPCG		0x5F0F0000
+#define		CRR_4_LPCG		0x5F0E0000
+#define		CRR_3_LPCG		0x5F0D0000
+#define		CRR_2_LPCG		0x5F0C0000
+#define		CRR_1_LPCG		0x5F0B0000
+#define		CRR_0_LPCG		0x5F0A0000
+#define		PHY_1_LPCG		0x5F090000
+#define		PHY_2_LPCG		0x5F080000
+#define		SATA_0_LPCG		0x5F070000
+#define		PCIE_B_LPCG		0x5F060000
+#define		PCIE_A_LPCG		0x5F050000
+
+/* DMA SS */
+#define		FLEX_CAN_2_LPCG		0x5ACF0000
+#define		FLEX_CAN_1_LPCG		0x5ACE0000
+#define		FLEX_CAN_0_LPCG		0x5ACD0000
+#define		FTM_1_LPCG		0x5ACB0000
+#define		FTM_0_LPCG		0x5ACA0000
+#define		ADC_1_LPCG		0x5AC90000
+#define		ADC_0_LPCG		0x5AC80000
+#define		LPI2C_4_LPCG		0x5AC40000
+#define		LPI2C_3_LPCG		0x5AC30000
+#define		LPI2C_2_LPCG		0x5AC20000
+#define		LPI2C_1_LPCG		0x5AC10000
+#define		LPI2C_0_LPCG		0x5AC00000
+#define		EMVSIM_1_LPCG		0x5A4E0000
+#define		EMVSIM_0_LPCG		0x5A4D0000
+#define		LPUART_4_LPCG		0x5A4A0000
+#define		LPUART_3_LPCG		0x5A490000
+#define		LPUART_2_LPCG		0x5A480000
+#define		LPUART_1_LPCG		0x5A470000
+#define		LPUART_0_LPCG		0x5A460000
+#define		LPSPI_3_LPCG		0x5A430000
+#define		LPSPI_2_LPCG		0x5A420000
+#define		LPSPI_1_LPCG		0x5A410000
+#define		LPSPI_0_LPCG		0x5A400000
+
+/* Display SS */
+#define		DC_0_LPCG		0x56010000
+#define		DC_1_LPCG		0x57010000
+
+/* LVDS */
+#define		DI_LVDS_0_LPCG		0x56243000
+#define		DI_LVDS_1_LPCG		0x57243000
+
+/* DI HDMI */
+#define		DI_HDMI_LPCG		0x56263000
+
+/* RX-HDMI */
+#define		RX_HDMI_LPCG		0x58263000
+
+/* MIPI CSI SS */
+#define		MIPI_CSI_0_LPCG		0x58223000
+#define		MIPI_CSI_1_LPCG		0x58243000
+
+/* MIPI DSI SS */
+#define		MIPI_DSI_0_LPCG		0x56223000
+#define		MIPI_DSI_1_LPCG		0x57223000
+
+/* Imaging SS */
+#define IMG_JPEG_ENC_LPCG		0x585F0000
+#define IMG_JPEG_DEC_LPCG		0x585D0000
+#define IMG_PXL_LINK_DC1_LPCG	0x585C0000
+#define IMG_PXL_LINK_DC0_LPCG	0x585B0000
+#define IMG_PXL_LINK_HDMI_LPCG	0x585A0000
+#define IMG_PXL_LINK_CSI1_LPCG	0x58590000
+#define IMG_PXL_LINK_CSI0_LPCG	0x58580000
+#define IMG_PDMA_7_LPCG			0x58570000
+#define IMG_PDMA_6_LPCG			0x58560000
+#define IMG_PDMA_5_LPCG			0x58550000
+#define IMG_PDMA_4_LPCG			0x58540000
+#define IMG_PDMA_3_LPCG			0x58530000
+#define IMG_PDMA_2_LPCG			0x58520000
+#define IMG_PDMA_1_LPCG			0x58510000
+#define IMG_PDMA_0_LPCG			0x58500000
+
+/* HSIO SS */
+#define HSIO_GPIO_LPCG			0x5F100000
+#define HSIO_MISC_LPCG			0x5F0F0000
+#define HSIO_SATA_CRR4_LPCG		0x5F0E0000
+#define HSIO_PCIE_X1_CRR3_LPCG	0x5F0D0000
+#define HSIO_PCIE_X2_CRR2_LPCG	0x5F0C0000
+#define HSIO_PHY_X1_CRR1_LPCG	0x5F0B0000
+#define HSIO_PHY_X2_CRR0_LPCG	0x5F0A0000
+#define HSIO_PHY_X1_LPCG		0x5F090000
+#define HSIO_PHY_X2_LPCG		0x5F080000
+#define HSIO_SATA_LPCG			0x5F070000
+#define HSIO_PCIE_X1_LPCG		0x5F060000
+#define HSIO_PCIE_X2_LPCG		0x5F050000
+
+/* M4 SS */
+#define		M4_0_I2C_LPCG		0x37630000
+#define		M4_0_LPUART_LPCG	0x37620000
+#define		M4_0_LPIT_LPCG		0x37610000
+#define		M4_1_I2C_LPCG		0x3B630000
+#define		M4_1_LPUART_LPCG	0x3B620000
+#define		M4_1_LPIT_LPCG		0x3B610000
+
+/* Audio SS */
+#define     AUD_ASRC_0_LPCG         0x59400000
+#define     AUD_ESAI_0_LPCG         0x59410000
+#define     AUD_SPDIF_0_LPCG        0x59420000
+#define     AUD_SPDIF_1_LPCG        0x59430000
+#define     AUD_SAI_0_LPCG          0x59440000
+#define     AUD_SAI_1_LPCG          0x59450000
+#define     AUD_SAI_2_LPCG          0x59460000
+#define     AUD_SAI_3_LPCG          0x59470000
+#define     AUD_HDMI_RX_SAI_0_LPCG  0x59480000
+#define     AUD_HDMI_TX_SAI_0_LPCG  0x59490000
+#define     AUD_GPT_5_LPCG          0x594B0000
+#define     AUD_GPT_6_LPCG          0x594C0000
+#define     AUD_GPT_7_LPCG          0x594D0000
+#define     AUD_GPT_8_LPCG          0x594E0000
+#define     AUD_GPT_9_LPCG          0x594F0000
+#define     AUD_GPT_10_LPCG         0x59500000
+#define     AUD_DSP_LPCG            0x59580000
+#define     AUD_OCRAM_LPCG          0x59590000
+#define     AUD_EDMA_0_LPCG         0x595f0000
+#define     AUD_ASRC_1_LPCG         0x59c00000
+#define     AUD_ESAI_1_LPCG         0x59c10000
+#define     AUD_SAI_6_LPCG          0x59c20000
+#define     AUD_SAI_7_LPCG          0x59c30000
+#define     AUD_AMIX_LPCG           0x59c40000
+#define     AUD_MQS_LPCG            0x59c50000
+#define     AUD_ACM_LPCG            0x59c60000
+#define     AUD_REC_CLK0_LPCG       0x59d00000
+#define     AUD_REC_CLK1_LPCG       0x59d10000
+#define     AUD_PLL_CLK0_LPCG       0x59d20000
+#define     AUD_PLL_CLK1_LPCG       0x59d30000
+#define     AUD_MCLKOUT0_LPCG       0x59d50000
+#define     AUD_MCLKOUT1_LPCG       0x59d60000
+#define     AUD_EDMA_1_LPCG         0x59df0000
+
+
+/* Connectivity SS */
+#define     USDHC_0_LPCG        0x5B200000
+#define     USDHC_1_LPCG        0x5B210000
+#define     USDHC_2_LPCG        0x5B220000
+#define     ENET_0_LPCG         0x5B230000
+#define     ENET_1_LPCG         0x5B240000
+#define     DTCP_LPCG           0x5B250000
+#define     MLB_LPCG            0x5B260000
+#define     USB_2_LPCG          0x5B270000
+#define     USB_3_LPCG          0x5B280000
+#define     NAND_LPCG           0x5B290000
+#define     EDMA_LPCG           0x5B2A0000
+
+/* CM40 SS */
+#define	CM40_I2C_LPCG		0x37630000
+
+/* CM41 SS */
+#define	CM41_I2C_LPCG		0x3B630000
+
+#endif
diff --git a/arch/arm/include/asm/arch-imx8/imx8qxp_lpcg.h b/arch/arm/include/asm/arch-imx8/imx8qxp_lpcg.h
new file mode 100644
index 0000000000..5fed5140c1
--- /dev/null
+++ b/arch/arm/include/asm/arch-imx8/imx8qxp_lpcg.h
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2018 NXP
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _SC_LPCG_H
+#define _SC_LPCG_H
+
+/*LSIO SS */
+#define		PWM_0_LPCG		0x5D400000
+#define		PWM_1_LPCG		0x5D410000
+#define		PWM_2_LPCG		0x5D420000
+#define		PWM_3_LPCG		0x5D430000
+#define		PWM_4_LPCG		0x5D440000
+#define		PWM_5_LPCG		0x5D450000
+#define		PWM_6_LPCG		0x5D460000
+#define		PWM_7_LPCG		0x5D470000
+#define		GPIO_0_LPCG		0x5D480000
+#define		GPIO_1_LPCG		0x5D490000
+#define		GPIO_2_LPCG		0x5D4A0000
+#define		GPIO_3_LPCG		0x5D4B0000
+#define		GPIO_4_LPCG		0x5D4C0000
+#define		GPIO_5_LPCG		0x5D4D0000
+#define		GPIO_6_LPCG		0x5D4E0000
+#define		GPIO_7_LPCG		0x5D4F0000
+#define		FSPI_0_LPCG		0x5D520000
+#define		FSPI_1_LPCG		0x5D530000
+#define		GPT_0_LPCG		0x5D540000
+#define		GPT_1_LPCG		0x5D550000
+#define		GPT_2_LPCG		0x5D560000
+#define		GPT_3_LPCG		0x5D570000
+#define		GPT_4_LPCG		0x5D580000
+#define		OCRAM_LPCG		0x5D590000
+#define		KPP_LPCG		0x5D5A0000
+#define		ROMCP_LPCG		0x5D500000
+#define		MU_5A_LPCG		0x5D600000
+#define		MU_6A_LPCG		0x5D610000
+#define		MU_7A_LPCG		0x5D620000
+#define		MU_8A_LPCG		0x5D630000
+#define		MU_9A_LPCG		0x5D640000
+#define		MU_10A_LPCG		0x5D650000
+#define		MU_11A_LPCG		0x5D660000
+#define		MU_12A_LPCG		0x5D670000
+#define		MU_13A_LPCG		0x5D680000
+
+/* HSIO SS */
+#define		CRR_5_LPCG		0x5F0F0000
+#define		CRR_4_LPCG		0x5F0E0000
+#define		CRR_3_LPCG		0x5F0D0000
+#define		CRR_2_LPCG		0x5F0C0000
+#define		CRR_1_LPCG		0x5F0B0000
+#define		CRR_0_LPCG		0x5F0A0000
+#define		PHY_1_LPCG		0x5F090000
+#define		PHY_2_LPCG		0x5F080000
+#define		SATA_0_LPCG		0x5F070000
+#define		PCIE_B_LPCG		0x5F060000
+#define		PCIE_A_LPCG		0x5F050000
+
+/* DMA SS */
+#define		FLEX_CAN_2_LPCG		0x5ACF0000
+#define		FLEX_CAN_1_LPCG		0x5ACE0000
+#define		FLEX_CAN_0_LPCG		0x5ACD0000
+#define		FTM_1_LPCG		0x5ACB0000
+#define		FTM_0_LPCG		0x5ACA0000
+#define		ADC_0_LPCG		0x5AC80000
+#define		LPI2C_3_LPCG		0x5AC30000
+#define		LPI2C_2_LPCG		0x5AC20000
+#define		LPI2C_1_LPCG		0x5AC10000
+#define		LPI2C_0_LPCG		0x5AC00000
+#define		PWM_LPCG		0x5A590000
+#define		LCD_LPCG		0x5A580000
+#define		LPUART_3_LPCG		0x5A490000
+#define		LPUART_2_LPCG		0x5A480000
+#define		LPUART_1_LPCG		0x5A470000
+#define		LPUART_0_LPCG		0x5A460000
+#define		LPSPI_3_LPCG		0x5A430000
+#define		LPSPI_2_LPCG		0x5A420000
+#define		LPSPI_1_LPCG		0x5A410000
+#define		LPSPI_0_LPCG		0x5A400000
+
+/* Display SS */
+#define		DC_0_LPCG		0x56010000
+#define		DC_1_LPCG		0x57010000
+
+/* LVDS */
+#define		DI_LVDS_0_LPCG		0x56243000
+#define		DI_LVDS_1_LPCG		0x57243000
+
+/* DI HDMI */
+#define		DI_HDMI_LPCG		0x56263000
+
+/* RX-HDMI */
+#define		RX_HDMI_LPCG		0x58263000
+
+/* MIPI CSI SS */
+#define		MIPI_CSI_0_LPCG		0x58223000
+#define		MIPI_CSI_1_LPCG		0x58243000
+
+/* PARALLEL CSI SS */
+#define		PARALLEL_CSI_LPCG	0x58263000
+
+/* Display MIPI SS */
+#define		DI_MIPI0_LPCG		0x56223000
+#define		DI_MIPI1_LPCG		0x56243000
+
+/* Imaging SS */
+#define IMG_JPEG_ENC_LPCG		0x585F0000
+#define IMG_JPEG_DEC_LPCG		0x585D0000
+#define IMG_PXL_LINK_DC1_LPCG	0x585C0000
+#define IMG_PXL_LINK_DC0_LPCG	0x585B0000
+#define IMG_PXL_LINK_HDMI_LPCG	0x585A0000
+#define IMG_PXL_LINK_CSI1_LPCG	0x58590000
+#define IMG_PXL_LINK_CSI0_LPCG	0x58580000
+#define IMG_PDMA_7_LPCG			0x58570000
+#define IMG_PDMA_6_LPCG			0x58560000
+#define IMG_PDMA_5_LPCG			0x58550000
+#define IMG_PDMA_4_LPCG			0x58540000
+#define IMG_PDMA_3_LPCG			0x58530000
+#define IMG_PDMA_2_LPCG			0x58520000
+#define IMG_PDMA_1_LPCG			0x58510000
+#define IMG_PDMA_0_LPCG			0x58500000
+
+/* HSIO SS */
+#define HSIO_GPIO_LPCG			0x5F100000
+#define HSIO_MISC_LPCG			0x5F0F0000
+#define HSIO_SATA_CRR4_LPCG		0x5F0E0000
+#define HSIO_PCIE_X1_CRR3_LPCG	0x5F0D0000
+#define HSIO_PCIE_X2_CRR2_LPCG	0x5F0C0000
+#define HSIO_PHY_X1_CRR1_LPCG	0x5F0B0000
+#define HSIO_PHY_X2_CRR0_LPCG	0x5F0A0000
+#define HSIO_PHY_X1_LPCG		0x5F090000
+#define HSIO_PHY_X2_LPCG		0x5F080000
+#define HSIO_SATA_LPCG			0x5F070000
+#define HSIO_PCIE_X1_LPCG		0x5F060000
+#define HSIO_PCIE_X2_LPCG		0x5F050000
+
+/* M4 SS */
+#define		M4_0_I2C_LPCG		0x37630000
+#define		M4_0_LPUART_LPCG	0x37620000
+#define		M4_0_LPIT_LPCG		0x37610000
+#define		M4_1_I2C_LPCG		0x3B630000
+#define		M4_1_LPUART_LPCG	0x3B620000
+#define		M4_1_LPIT_LPCG		0x3B610000
+
+/* Audio SS */
+#define     AUD_ASRC_0_LPCG         0x59400000
+#define     AUD_ESAI_0_LPCG         0x59410000
+#define     AUD_SPDIF_0_LPCG        0x59420000
+#define     AUD_SAI_0_LPCG          0x59440000
+#define     AUD_SAI_1_LPCG          0x59450000
+#define     AUD_SAI_2_LPCG          0x59460000
+#define     AUD_SAI_3_LPCG          0x59470000
+#define     AUD_GPT_5_LPCG          0x594B0000
+#define     AUD_GPT_6_LPCG          0x594C0000
+#define     AUD_GPT_7_LPCG          0x594D0000
+#define     AUD_GPT_8_LPCG          0x594E0000
+#define     AUD_GPT_9_LPCG          0x594F0000
+#define     AUD_GPT_10_LPCG         0x59500000
+#define     AUD_DSP_LPCG            0x59580000
+#define     AUD_OCRAM_LPCG          0x59590000
+#define     AUD_EDMA_0_LPCG         0x595f0000
+#define     AUD_ASRC_1_LPCG         0x59c00000
+#define     AUD_SAI_4_LPCG          0x59c20000
+#define     AUD_SAI_5_LPCG          0x59c30000
+#define     AUD_AMIX_LPCG           0x59c40000
+#define     AUD_MQS_LPCG            0x59c50000
+#define     AUD_ACM_LPCG            0x59c60000
+#define     AUD_REC_CLK0_LPCG       0x59d00000
+#define     AUD_REC_CLK1_LPCG       0x59d10000
+#define     AUD_PLL_CLK0_LPCG       0x59d20000
+#define     AUD_PLL_CLK1_LPCG       0x59d30000
+#define     AUD_MCLKOUT0_LPCG       0x59d50000
+#define     AUD_MCLKOUT1_LPCG       0x59d60000
+#define     AUD_EDMA_1_LPCG         0x59df0000
+
+
+/* Connectivity SS */
+#define     USDHC_0_LPCG        0x5B200000
+#define     USDHC_1_LPCG        0x5B210000
+#define     USDHC_2_LPCG        0x5B220000
+#define     ENET_0_LPCG         0x5B230000
+#define     ENET_1_LPCG         0x5B240000
+#define     DTCP_LPCG           0x5B250000
+#define     MLB_LPCG            0x5B260000
+#define     USB_2_LPCG          0x5B270000
+#define     USB_3_LPCG          0x5B280000
+#define     NAND_LPCG           0x5B290000
+#define     EDMA_LPCG           0x5B2A0000
+
+/* CM40 SS */
+#define     CM40_I2C_LPCG       0x37630000
+
+
+#endif
diff --git a/arch/arm/include/asm/arch-imx8/lpcg.h b/arch/arm/include/asm/arch-imx8/lpcg.h
new file mode 100644
index 0000000000..7e551f0ec1
--- /dev/null
+++ b/arch/arm/include/asm/arch-imx8/lpcg.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2018 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __ASM_ARCH_IMX8_LPCG_H__
+#define __ASM_ARCH_IMX8_LPCG_H__
+
+#if defined(CONFIG_IMX8QM)
+#include "imx8qm_lpcg.h"
+#elif defined(CONFIG_IMX8QXP)
+#include "imx8qxp_lpcg.h"
+#else
+#error "No lpcg header"
+#endif
+
+void LPCG_ClockOff(u32 lpcg_addr, u8 clk);
+void LPCG_ClockOn(u32 lpcg_addr, u8 clk);
+void LPCG_ClockAutoGate(u32 lpcg_addr, u8 clk);
+void LPCG_AllClockOff(u32 lpcg_addr);
+void LPCG_AllClockOn(u32 lpcg_addr);
+void LPCG_AllClockAutoGate(u32 lpcg_addr);
+
+#endif	/* __ASM_ARCH_IMX8_LPCG_H__ */
diff --git a/arch/arm/mach-imx/imx8/lpcg.c b/arch/arm/mach-imx/imx8/lpcg.c
new file mode 100644
index 0000000000..7e915744f2
--- /dev/null
+++ b/arch/arm/mach-imx/imx8/lpcg.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2017-2018 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <linux/errno.h>
+#include <asm/arch/lpcg.h>
+
+#define LPCG_CLOCK_MASK         0x3U
+#define LPCG_CLOCK_OFF          0x0U
+#define LPCG_CLOCK_ON           0x2U
+#define LPCG_CLOCK_AUTO         0x3U
+#define LPCG_CLOCK_STOP         0x8U
+
+#define LPCG_ALL_CLOCK_OFF      0x00000000U
+#define LPCG_ALL_CLOCK_ON       0x22222222U
+#define LPCG_ALL_CLOCK_AUTO     0x33333333U
+#define LPCG_ALL_CLOCK_STOP     0x88888888U
+
+void LPCG_ClockOff(u32 lpcg_addr, u8 clk)
+{
+	u32 lpcgVal;
+
+	/* Read from LPCG */
+	lpcgVal = readl((ulong)lpcg_addr);
+
+	/* Modify */
+	lpcgVal &= ~((u32)(LPCG_CLOCK_MASK) << (clk * 4U));
+	lpcgVal |= ((u32)(LPCG_CLOCK_OFF) << (clk * 4U));
+
+	/* Write to LPCG */
+	writel(lpcgVal, (ulong)lpcg_addr);
+}
+
+void LPCG_ClockOn(u32 lpcg_addr, u8 clk)
+{
+	u32 lpcgVal;
+
+	/* Read from LPCG */
+	lpcgVal = readl((ulong)lpcg_addr);
+
+	/* Modify */
+	lpcgVal &= ~((u32)(LPCG_CLOCK_MASK) << (clk * 4U));
+	lpcgVal |= ((u32)(LPCG_CLOCK_ON) << (clk * 4U));
+
+	/* Write to LPCG */
+	writel(lpcgVal, (ulong)lpcg_addr);
+}
+
+void LPCG_ClockAutoGate(u32 lpcg_addr, u8 clk)
+{
+	u32 lpcgVal;
+
+	/* Read from LPCG */
+	lpcgVal = readl((ulong)lpcg_addr);
+
+	/* Modify */
+	lpcgVal &= ~((u32)(LPCG_CLOCK_MASK) << (clk * 4U));
+	lpcgVal |= ((u32)(LPCG_CLOCK_AUTO) << (clk * 4U));
+
+	/* Write to LPCG */
+	writel(lpcgVal, (ulong)lpcg_addr);
+}
+
+void LPCG_AllClockOff(u32 lpcg_addr)
+{
+	/* Write to LPCG */
+	writel(LPCG_ALL_CLOCK_OFF, (ulong)lpcg_addr);
+}
+
+void LPCG_AllClockOn(u32 lpcg_addr)
+{
+	/* Write to LPCG */
+	writel(LPCG_ALL_CLOCK_ON, (ulong)lpcg_addr);
+
+	/* Wait for clocks to start */
+	while ((readl((ulong)lpcg_addr) & LPCG_ALL_CLOCK_STOP) != 0U)
+	{
+	}
+}
+
+void LPCG_AllClockAutoGate(u32 lpcg_addr)
+{
+	/* Write to LPCG */
+	writel(LPCG_ALL_CLOCK_AUTO, (ulong)lpcg_addr);
+}