Add intial PMU settings for exynos5420. This is required for
future S2R and Switching support.
Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
---
arch/arm/mach-exynos/include/mach/regs-pmu.h | 82 ++++++++++++++++++++
arch/arm/mach-exynos/pmu.c | 106 ++++++++++++++++++++++++++
2 files changed, 188 insertions(+)
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 2cdb63e..d5d5386 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -53,6 +53,8 @@
#define S5P_INFORM6 S5P_PMUREG(0x0818)
#define S5P_INFORM7 S5P_PMUREG(0x081C)
+#define S5P_PMU_SPARE3 S5P_PMUREG(0x090C)
+
#define S5P_ARM_CORE0_LOWPWR S5P_PMUREG(0x1000)
#define S5P_DIS_IRQ_CORE0 S5P_PMUREG(0x1004)
#define S5P_DIS_IRQ_CENTRAL0 S5P_PMUREG(0x1008)
@@ -365,4 +367,84 @@
#define EXYNOS5_OPTION_USE_RETENTION (1 << 4)
+/* Only for EXYNOS5420 */
+#define EXYNOS5420_LPI_MASK S5P_PMUREG(0x0004)
+#define EXYNOS5420_LPI_MASK1 S5P_PMUREG(0x0008)
+#define EXYNOS5420_ARM_INTR_SPREAD_ENABLE S5P_PMUREG(0x0100)
+#define EXYNOS5420_ARM_INTR_SPREAD_USE_STANDBYWFI S5P_PMUREG(0x0104)
+#define EXYNOS5420_UP_SCHEDULER S5P_PMUREG(0x0120)
+#define EXYNOS5420_CMU_CLKSTOP_DISP1_SYS_PWR_REG S5P_PMUREG(0x1490)
+#define EXYNOS5420_CMU_CLKSTOP_MAU_SYS_PWR_REG S5P_PMUREG(0x1494)
+#define EXYNOS5420_CMU_CLKSTOP_G2D_SYS_PWR_REG S5P_PMUREG(0x1498)
+#define EXYNOS5420_CMU_CLKSTOP_MSC_SYS_PWR_REG S5P_PMUREG(0x149C)
+#define EXYNOS5420_CMU_CLKSTOP_FSYS_SYS_PWR_REG S5P_PMUREG(0x14A0)
+#define EXYNOS5420_CMU_CLKSTOP_FSYS2_SYS_PWR_REG S5P_PMUREG(0x14A4)
+#define EXYNOS5420_CMU_CLKSTOP_PSGEN_SYS_PWR_REG S5P_PMUREG(0x14A8)
+#define EXYNOS5420_CMU_CLKSTOP_PERIC_SYS_PWR_REG S5P_PMUREG(0x14AC)
+#define EXYNOS5420_CMU_CLKSTOP_WCORE_SYS_PWR_REG S5P_PMUREG(0x14B0)
+#define EXYNOS5420_CMU_SYSCLK_TOPPWR_SYS_PWR_REG S5P_PMUREG(0x14BC)
+#define EXYNOS5420_CMU_SYSCLK_DISP1_SYS_PWR_REG S5P_PMUREG(0x14D0)
+#define EXYNOS5420_CMU_SYSCLK_MAU_SYS_PWR_REG S5P_PMUREG(0x14D4)
+#define EXYNOS5420_CMU_SYSCLK_G2D_SYS_PWR_REG S5P_PMUREG(0x14D8)
+#define EXYNOS5420_CMU_SYSCLK_MSC_SYS_PWR_REG S5P_PMUREG(0x14DC)
+#define EXYNOS5420_CMU_SYSCLK_FSYS_SYS_PWR_REG S5P_PMUREG(0x14E0)
+#define EXYNOS5420_CMU_SYSCLK_FSYS2_SYS_PWR_REG S5P_PMUREG(0x14E4)
+#define EXYNOS5420_CMU_SYSCLK_PSGEN_SYS_PWR_REG S5P_PMUREG(0x14E8)
+#define EXYNOS5420_CMU_SYSCLK_PERIC_SYS_PWR_REG S5P_PMUREG(0x14EC)
+#define EXYNOS5420_CMU_SYSCLK_WCORE_SYS_PWR_REG S5P_PMUREG(0x14F0)
+#define EXYNOS5420_CMU_SYSCLK_SYSMEM_TOPPWR_SYS_PWR_REG S5P_PMUREG(0x14F4)
+#define EXYNOS5420_CMU_RESET_FSYS2_SYS_PWR_REG S5P_PMUREG(0x1570)
+#define EXYNOS5420_CMU_RESET_PSGEN_SYS_PWR_REG S5P_PMUREG(0x1574)
+#define EXYNOS5420_CMU_RESET_PERIC_SYS_PWR_REG S5P_PMUREG(0x1578)
+#define EXYNOS5420_CMU_RESET_WCORE_SYS_PWR_REG S5P_PMUREG(0x157C)
+#define EXYNOS5420_CMU_RESET_DISP1_SYS_PWR_REG S5P_PMUREG(0x1590)
+#define EXYNOS5420_CMU_RESET_MAU_SYS_PWR_REG S5P_PMUREG(0x1594)
+#define EXYNOS5420_CMU_RESET_G2D_SYS_PWR_REG S5P_PMUREG(0x1598)
+#define EXYNOS5420_CMU_RESET_MSC_SYS_PWR_REG S5P_PMUREG(0x159C)
+#define EXYNOS5420_CMU_RESET_FSYS_SYS_PWR_REG S5P_PMUREG(0x15A0)
+#define EXYNOS5420_ARM_COMMON_STATUS S5P_PMUREG(0x2504)
+#define EXYNOS5420_ARM_COMMON_OPTION S5P_PMUREG(0x2508)
+#define EXYNOS5420_KFC_COMMON_STATUS S5P_PMUREG(0x2584)
+#define EXYNOS5420_KFC_COMMON_OPTION S5P_PMUREG(0x2588)
+#define EXYNOS5420_ARM_L2_OPTION S5P_PMUREG(0x2608)
+#define EXYNOS5420_KFC_L2_OPTION S5P_PMUREG(0x2688)
+#define EXYNOS5420_LOGIC_RESET_DURATION3 S5P_PMUREG(0x2D1C)
+
+#define EXYNOS5_XXTI_DURATION3 S5P_PMUREG(0x343C)
+
+/* For EXYNOS_CENTRAL_SEQ_OPTION */
+#define EXYNOS5420_ARM_USE_STANDBY_WFI0 (1 << 4)
+#define EXYNOS5420_ARM_USE_STANDBY_WFI1 (1 << 5)
+#define EXYNOS5420_ARM_USE_STANDBY_WFI2 (1 << 6)
+#define EXYNOS5420_ARM_USE_STANDBY_WFI3 (1 << 7)
+#define EXYNOS5420_KFC_USE_STANDBY_WFI0 (1 << 8)
+#define EXYNOS5420_KFC_USE_STANDBY_WFI1 (1 << 9)
+#define EXYNOS5420_KFC_USE_STANDBY_WFI2 (1 << 10)
+#define EXYNOS5420_KFC_USE_STANDBY_WFI3 (1 << 11)
+#define EXYNOS5420_ARM_USE_STANDBY_WFE0 (1 << 16)
+#define EXYNOS5420_ARM_USE_STANDBY_WFE1 (1 << 17)
+#define EXYNOS5420_ARM_USE_STANDBY_WFE2 (1 << 18)
+#define EXYNOS5420_ARM_USE_STANDBY_WFE3 (1 << 19)
+#define EXYNOS5420_KFC_USE_STANDBY_WFE0 (1 << 20)
+#define EXYNOS5420_KFC_USE_STANDBY_WFE1 (1 << 21)
+#define EXYNOS5420_KFC_USE_STANDBY_WFE2 (1 << 22)
+#define EXYNOS5420_KFC_USE_STANDBY_WFE3 (1 << 23)
+
+#define EXYNOS5420_USE_STANDBY_WFI_ALL (EXYNOS5420_ARM_USE_STANDBY_WFI0 \
+ | EXYNOS5420_ARM_USE_STANDBY_WFI1 \
+ | EXYNOS5420_ARM_USE_STANDBY_WFI2 \
+ | EXYNOS5420_ARM_USE_STANDBY_WFI3 \
+ | EXYNOS5420_KFC_USE_STANDBY_WFI0 \
+ | EXYNOS5420_KFC_USE_STANDBY_WFI1 \
+ | EXYNOS5420_KFC_USE_STANDBY_WFI2 \
+ | EXYNOS5420_KFC_USE_STANDBY_WFI3)
+
+#define EXYNOS5420_ATB_KFC (1 << 13)
+#define EXYNOS5420_ATB_ISP_ARM (1 << 19)
+
+#define DUR_WAIT_RESET 0xF
+#define SPREAD_ENABLE 0xF
+#define SPREAD_USE_STANDWFI 0xF
+#define EXYNOS5420_SWRESET_KFC_SEL 0x3
+
#endif /* __ASM_ARCH_REGS_PMU_H */
diff --git a/arch/arm/mach-exynos/pmu.c b/arch/arm/mach-exynos/pmu.c
index 97d6885..2dd21bc 100644
--- a/arch/arm/mach-exynos/pmu.c
+++ b/arch/arm/mach-exynos/pmu.c
@@ -14,6 +14,7 @@
#include <linux/bug.h>
#include <mach/regs-clock.h>
+#include <mach/regs-pmu.h>
#include "common.h"
@@ -337,6 +338,46 @@ static void __iomem *exynos5_list_diable_wfi_wfe[] = {
EXYNOS5_ISP_ARM_OPTION,
};
+void __iomem *exynos5420_list_disable_pmu_reg[] = {
+ EXYNOS5_CMU_CLKSTOP_GSCL_SYS_PWR_REG,
+ EXYNOS5_CMU_CLKSTOP_ISP_SYS_PWR_REG,
+ EXYNOS5_CMU_CLKSTOP_MFC_SYS_PWR_REG,
+ EXYNOS5_CMU_CLKSTOP_G3D_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_DISP1_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_MAU_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_G2D_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_MSC_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_FSYS_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_PSGEN_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_PERIC_SYS_PWR_REG,
+ EXYNOS5420_CMU_CLKSTOP_WCORE_SYS_PWR_REG,
+ EXYNOS5_CMU_SYSCLK_GSCL_SYS_PWR_REG,
+ EXYNOS5_CMU_SYSCLK_ISP_SYS_PWR_REG,
+ EXYNOS5_CMU_SYSCLK_MFC_SYS_PWR_REG,
+ EXYNOS5_CMU_SYSCLK_G3D_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_DISP1_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_MAU_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_G2D_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_MSC_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_FSYS_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_FSYS2_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_PSGEN_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_PERIC_SYS_PWR_REG,
+ EXYNOS5420_CMU_SYSCLK_WCORE_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_FSYS2_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_PSGEN_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_PERIC_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_WCORE_SYS_PWR_REG,
+ EXYNOS5_CMU_RESET_GSCL_SYS_PWR_REG,
+ EXYNOS5_CMU_RESET_ISP_SYS_PWR_REG,
+ EXYNOS5_CMU_RESET_MFC_SYS_PWR_REG,
+ EXYNOS5_CMU_RESET_G3D_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_DISP1_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_MAU_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_G2D_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_MSC_SYS_PWR_REG,
+ EXYNOS5420_CMU_RESET_FSYS_SYS_PWR_REG,
+};
static void exynos5_init_pmu(void)
{
unsigned int i;
@@ -391,6 +432,7 @@ void exynos_sys_powerdown_conf(enum sys_powerdown mode)
static int __init exynos_pmu_init(void)
{
unsigned int value;
+ unsigned int i;
exynos_pmu_config = exynos4210_pmu_config;
@@ -415,6 +457,70 @@ static int __init exynos_pmu_init(void)
exynos_pmu_config = exynos5250_pmu_config;
pr_info("EXYNOS5250 PMU Initialize\n");
+ } else if (soc_is_exynos5420()) {
+ /*
+ * Set the CMU_RESET, CMU_SYSCLK and CMU_CLKSTOP registers
+ * for local power blocks to Low initially as per Table 8-4:
+ * "System-Level Power-Down Configuration Registers".
+ */
+ for (i = 0; i < ARRAY_SIZE(exynos5420_list_disable_pmu_reg); i++)
+ __raw_writel(0x0, exynos5420_list_disable_pmu_reg[i]);
+
+ /* Time taken to stabilized XXTI clock */
+ __raw_writel(0x005dc, EXYNOS5_XXTI_DURATION3);
+
+ /* Enable USE_STANDBY_WFI for all CORE */
+ __raw_writel(EXYNOS5420_USE_STANDBY_WFI_ALL,
+ S5P_CENTRAL_SEQ_OPTION);
+
+ value = __raw_readl(EXYNOS5420_ARM_L2_OPTION);
+ value &= ~EXYNOS5_OPTION_USE_RETENTION;
+ __raw_writel(value, EXYNOS5420_ARM_L2_OPTION);
+
+ value = __raw_readl(EXYNOS5420_KFC_L2_OPTION);
+ value &= ~EXYNOS5_OPTION_USE_RETENTION;
+ __raw_writel(value, EXYNOS5420_KFC_L2_OPTION);
+
+ /*
+ * If L2_COMMON is turned off, clocks related to ATB async
+ * bridge are gated. Thus, when ISP power is gated, LPI
+ * may get stuck.
+ */
+ value = __raw_readl(EXYNOS5420_LPI_MASK);
+ value |= EXYNOS5420_ATB_ISP_ARM;
+ __raw_writel(value, EXYNOS5420_LPI_MASK);
+ value = __raw_readl(EXYNOS5420_LPI_MASK1);
+ value |= EXYNOS5420_ATB_KFC;
+ __raw_writel(value, EXYNOS5420_LPI_MASK1);
+
+ /* Prevent issue of new bus request from L2 memory */
+ value = __raw_readl(EXYNOS5420_ARM_COMMON_OPTION);
+ value |= EXYNOS5_SKIP_DEACTIVATE_ACEACP_IN_PWDN;
+ value &= ~EXYNOS5_USE_SC_COUNTER;
+ value |= EXYNOS5_USE_SC_FEEDBACK;
+ __raw_writel(value, EXYNOS5420_ARM_COMMON_OPTION);
+
+ value = __raw_readl(EXYNOS5420_KFC_COMMON_OPTION);
+ value |= EXYNOS5_SKIP_DEACTIVATE_ACEACP_IN_PWDN;
+ value &= ~EXYNOS5_USE_SC_COUNTER;
+ value |= EXYNOS5_USE_SC_FEEDBACK;
+ __raw_writel(value, EXYNOS5420_KFC_COMMON_OPTION);
+
+ /* Increase stability of KFC Reset */
+ __raw_writel(EXYNOS5420_SWRESET_KFC_SEL, S5P_PMU_SPARE3);
+
+ /*
+ * This setting is to reduce suspend/resume time.
+ */
+ __raw_writel(DUR_WAIT_RESET, EXYNOS5420_LOGIC_RESET_DURATION3);
+
+ /* Serialized CPU wakeup of Eagle */
+ __raw_writel(SPREAD_ENABLE, EXYNOS5420_ARM_INTR_SPREAD_ENABLE);
+ __raw_writel(SPREAD_USE_STANDWFI,
+ EXYNOS5420_ARM_INTR_SPREAD_USE_STANDBYWFI);
+ __raw_writel(0x1, EXYNOS5420_UP_SCHEDULER);
+
+ pr_info("EXYNOS5420 PMU Initialized\n");
} else {
pr_info("EXYNOS: PMU not supported\n");
}
--
1.7.9.5
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