MLK-20528-2 imx8: Enable clocks LPCG

To support partition reboot, the u-boot has to enable clocks by LPCG.
The LPCG will reset to default value only when the subsystem is totally
power off and reset. However, the resources in one subsystem may belong
to different partitions, so the partition reboot may not reboot the entire
subsystem.
Powers, clocks/lpcg, GPR, IP may not reset depends on various cases and
HW design. Thus, AP software has to ensure everything is reset by SW
itself to support such above cases.

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 484104758d3c2f98d3c9ae493f778b1427e2630c)

4 files changed, 52 insertions, 0 deletions

diff --git a/board/freescale/imx8qm_arm2/imx8qm_arm2.c b/board/freescale/imx8qm_arm2/imx8qm_arm2.c
index 6827b57a64..911485e5dc 100644
--- a/board/freescale/imx8qm_arm2/imx8qm_arm2.c
+++ b/board/freescale/imx8qm_arm2/imx8qm_arm2.c
@@ -29,6 +29,7 @@
 #include <asm/arch/video_common.h>
 #include <power-domain.h>
 #include <cdns3-uboot.h>
+#include <asm/arch/lpcg.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -90,6 +91,8 @@ int board_early_init_f(void)
 	if (sciErr != SC_ERR_NONE)
 		return 0;
 
+	LPCG_AllClockOn(LPUART_0_LPCG);
+
 	setup_iomux_uart();
 
 	return 0;
@@ -485,6 +488,19 @@ static void imx8qm_hsio_initialize(void)
 			 printf("hsio_gpio Power up failed! (error = %d)\n", ret);
 	}
 
+	LPCG_AllClockOn(HSIO_PCIE_X2_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X1_LPCG);
+	LPCG_AllClockOn(HSIO_SATA_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X2_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X2_CRR0_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_CRR1_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X2_CRR2_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X1_CRR3_LPCG);
+	LPCG_AllClockOn(HSIO_SATA_CRR4_LPCG);
+	LPCG_AllClockOn(HSIO_MISC_LPCG);
+	LPCG_AllClockOn(HSIO_GPIO_LPCG);
+
 	imx8_iomux_setup_multiple_pads(board_pcie_pins, ARRAY_SIZE(board_pcie_pins));
 
 }
diff --git a/board/freescale/imx8qm_mek/imx8qm_mek.c b/board/freescale/imx8qm_mek/imx8qm_mek.c
index 943bb2f792..2efec39736 100644
--- a/board/freescale/imx8qm_mek/imx8qm_mek.c
+++ b/board/freescale/imx8qm_mek/imx8qm_mek.c
@@ -29,6 +29,7 @@
 #include <power-domain.h>
 #include "../common/tcpc.h"
 #include <cdns3-uboot.h>
+#include <asm/arch/lpcg.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -87,6 +88,8 @@ int board_early_init_f(void)
 	if (sciErr != SC_ERR_NONE)
 		return 0;
 
+	LPCG_AllClockOn(LPUART_0_LPCG);
+
 	setup_iomux_uart();
 
 	return 0;
@@ -267,6 +270,19 @@ static void imx8qm_hsio_initialize(void)
 			 printf("hsio_gpio Power up failed! (error = %d)\n", ret);
 	}
 
+	LPCG_AllClockOn(HSIO_PCIE_X2_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X1_LPCG);
+	LPCG_AllClockOn(HSIO_SATA_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X2_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X2_CRR0_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_CRR1_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X2_CRR2_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X1_CRR3_LPCG);
+	LPCG_AllClockOn(HSIO_SATA_CRR4_LPCG);
+	LPCG_AllClockOn(HSIO_MISC_LPCG);
+	LPCG_AllClockOn(HSIO_GPIO_LPCG);
+
 	imx8_iomux_setup_multiple_pads(board_pcie_pins, ARRAY_SIZE(board_pcie_pins));
 }
 
diff --git a/board/freescale/imx8qxp_arm2/imx8qxp_arm2.c b/board/freescale/imx8qxp_arm2/imx8qxp_arm2.c
index 39be56f262..e448001d7c 100644
--- a/board/freescale/imx8qxp_arm2/imx8qxp_arm2.c
+++ b/board/freescale/imx8qxp_arm2/imx8qxp_arm2.c
@@ -30,6 +30,7 @@
 #include <asm/arch/video_common.h>
 #include <power-domain.h>
 #include <cdns3-uboot.h>
+#include <asm/arch/lpcg.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -162,6 +163,8 @@ int board_early_init_f(void)
 	if (sciErr != SC_ERR_NONE)
 		return 0;
 
+	LPCG_AllClockOn(LPUART_0_LPCG);
+
 	setup_iomux_uart();
 
 #ifdef CONFIG_SPL_BUILD
@@ -512,6 +515,13 @@ static void imx8qxp_hsio_initialize(void)
 			printf("hsio_gpio Power up failed! (error = %d)\n", ret);
 	}
 
+	LPCG_AllClockOn(HSIO_PCIE_X1_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_CRR1_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X1_CRR3_LPCG);
+	LPCG_AllClockOn(HSIO_MISC_LPCG);
+	LPCG_AllClockOn(HSIO_GPIO_LPCG);
+
 	imx8_iomux_setup_multiple_pads(board_pcie_pins, ARRAY_SIZE(board_pcie_pins));
 }
 
diff --git a/board/freescale/imx8qxp_mek/imx8qxp_mek.c b/board/freescale/imx8qxp_mek/imx8qxp_mek.c
index 6f0a75e774..71e882b899 100644
--- a/board/freescale/imx8qxp_mek/imx8qxp_mek.c
+++ b/board/freescale/imx8qxp_mek/imx8qxp_mek.c
@@ -30,6 +30,7 @@
 #include <power-domain.h>
 #include "../common/tcpc.h"
 #include <cdns3-uboot.h>
+#include <asm/arch/lpcg.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -91,6 +92,8 @@ int board_early_init_f(void)
 	if (sciErr != SC_ERR_NONE)
 		return 0;
 
+	LPCG_AllClockOn(LPUART_0_LPCG);
+
 	setup_iomux_uart();
 
 	return 0;
@@ -398,6 +401,13 @@ static void imx8qxp_hsio_initialize(void)
 			 printf("hsio_gpio Power up failed! (error = %d)\n", ret);
 	}
 
+	LPCG_AllClockOn(HSIO_PCIE_X1_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_LPCG);
+	LPCG_AllClockOn(HSIO_PHY_X1_CRR1_LPCG);
+	LPCG_AllClockOn(HSIO_PCIE_X1_CRR3_LPCG);
+	LPCG_AllClockOn(HSIO_MISC_LPCG);
+	LPCG_AllClockOn(HSIO_GPIO_LPCG);
+
 	imx8_iomux_setup_multiple_pads(board_pcie_pins, ARRAY_SIZE(board_pcie_pins));
 }