[PATCH 2/4] riscv: reset: k1: Add reset driver
Huan Zhou
me at per1cycle.org
Tue Mar 4 08:03:28 CET 2025
Add spacemit reset driver.
---
drivers/reset/Kconfig | 7 +
drivers/reset/Makefile | 1 +
drivers/reset/reset-spacemit-k1.c | 438 ++++++++++++++++++++++++++++++++++++++
3 files changed, 446 insertions(+)
diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index fe5c1214f57a8b4d6f21b3a765bff813712ae3ff..6e1a255e0624c0c7d88067f0000e312a2bf474f5 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -235,4 +235,11 @@ config RESET_AT91
This enables the Reset Controller driver support for Microchip/Atmel
SoCs. Mainly used to expose assert/deassert methods to other drivers
that require it.
+
+config RESET_SPACEMIT_K1
+ bool "Support for SPACEMIT's K1 Reset driver"
+ depends on DM_RESET
+ help
+ Support for SPACEMIT's K1 Reset system. Basic Assert/Deassert
+ is supported.
endmenu
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index d99a78c9828b7f870acff8de75ebdcff59edc137..a69432bad2fb5980012e6fcc094a3ed669d9a378 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -33,3 +33,4 @@ obj-$(CONFIG_RESET_ZYNQMP) += reset-zynqmp.o
obj-$(CONFIG_RESET_DRA7) += reset-dra7.o
obj-$(CONFIG_RESET_AT91) += reset-at91.o
obj-$(CONFIG_$(PHASE_)RESET_JH7110) += reset-jh7110.o
+obj-$(CONFIG_RESET_SPACEMIT_K1) += reset-spacemit-k1.o
\ No newline at end of file
diff --git a/drivers/reset/reset-spacemit-k1.c b/drivers/reset/reset-spacemit-k1.c
new file mode 100644
index 0000000000000000000000000000000000000000..a7de2a2a943a70ce28b5787bb0eb06b485739841
--- /dev/null
+++ b/drivers/reset/reset-spacemit-k1.c
@@ -0,0 +1,438 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2022 Spacemit Inc.
+ * Copyright (C) 2025 Huan Zhou <pericycle.cc at gmail.com>
+ */
+
+#include <asm/io.h>
+#include <config.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dt-bindings/reset/spacemit-k1-reset.h>
+#include <linux/bitops.h>
+#include <reset-uclass.h>
+
+/* APBC register offset */
+#define APBC_UART1_CLK_RST 0x0
+#define APBC_UART2_CLK_RST 0x4
+#define APBC_GPIO_CLK_RST 0x8
+#define APBC_PWM0_CLK_RST 0xc
+#define APBC_PWM1_CLK_RST 0x10
+#define APBC_PWM2_CLK_RST 0x14
+#define APBC_PWM3_CLK_RST 0x18
+#define APBC_TWSI8_CLK_RST 0x20
+#define APBC_UART3_CLK_RST 0x24
+#define APBC_RTC_CLK_RST 0x28
+#define APBC_TWSI0_CLK_RST 0x2c
+#define APBC_TWSI1_CLK_RST 0x30
+#define APBC_TIMERS1_CLK_RST 0x34
+#define APBC_TWSI2_CLK_RST 0x38
+#define APBC_AIB_CLK_RST 0x3c
+#define APBC_TWSI4_CLK_RST 0x40
+#define APBC_TIMERS2_CLK_RST 0x44
+#define APBC_ONEWIRE_CLK_RST 0x48
+#define APBC_TWSI5_CLK_RST 0x4c
+#define APBC_DRO_CLK_RST 0x58
+#define APBC_IR_CLK_RST 0x5c
+#define APBC_TWSI6_CLK_RST 0x60
+#define APBC_TWSI7_CLK_RST 0x68
+#define APBC_TSEN_CLK_RST 0x6c
+
+#define APBC_UART4_CLK_RST 0x70
+#define APBC_UART5_CLK_RST 0x74
+#define APBC_UART6_CLK_RST 0x78
+#define APBC_SSP3_CLK_RST 0x7c
+
+#define APBC_SSPA0_CLK_RST 0x80
+#define APBC_SSPA1_CLK_RST 0x84
+
+#define APBC_IPC_AP2AUD_CLK_RST 0x90
+#define APBC_UART7_CLK_RST 0x94
+#define APBC_UART8_CLK_RST 0x98
+#define APBC_UART9_CLK_RST 0x9c
+
+#define APBC_CAN0_CLK_RST 0xa0
+#define APBC_PWM4_CLK_RST 0xa8
+#define APBC_PWM5_CLK_RST 0xac
+#define APBC_PWM6_CLK_RST 0xb0
+#define APBC_PWM7_CLK_RST 0xb4
+#define APBC_PWM8_CLK_RST 0xb8
+#define APBC_PWM9_CLK_RST 0xbc
+#define APBC_PWM10_CLK_RST 0xc0
+#define APBC_PWM11_CLK_RST 0xc4
+#define APBC_PWM12_CLK_RST 0xc8
+#define APBC_PWM13_CLK_RST 0xcc
+#define APBC_PWM14_CLK_RST 0xd0
+#define APBC_PWM15_CLK_RST 0xd4
+#define APBC_PWM16_CLK_RST 0xd8
+#define APBC_PWM17_CLK_RST 0xdc
+#define APBC_PWM18_CLK_RST 0xe0
+#define APBC_PWM19_CLK_RST 0xe4
+/* end of APBC register offset */
+
+/* MPMU register offset */
+#define MPMU_WDTPCR 0x200
+/* end of MPMU register offset */
+
+/* APMU register offset */
+#define APMU_JPG_CLK_RES_CTRL 0x20
+#define APMU_CSI_CCIC2_CLK_RES_CTRL 0x24
+#define APMU_ISP_CLK_RES_CTRL 0x38
+#define APMU_LCD_CLK_RES_CTRL1 0x44
+#define APMU_LCD_SPI_CLK_RES_CTRL 0x48
+#define APMU_LCD_CLK_RES_CTRL2 0x4c
+#define APMU_CCIC_CLK_RES_CTRL 0x50
+#define APMU_SDH0_CLK_RES_CTRL 0x54
+#define APMU_SDH1_CLK_RES_CTRL 0x58
+#define APMU_USB_CLK_RES_CTRL 0x5c
+#define APMU_QSPI_CLK_RES_CTRL 0x60
+#define APMU_USB_CLK_RES_CTRL 0x5c
+#define APMU_DMA_CLK_RES_CTRL 0x64
+#define APMU_AES_CLK_RES_CTRL 0x68
+#define APMU_VPU_CLK_RES_CTRL 0xa4
+#define APMU_GPU_CLK_RES_CTRL 0xcc
+#define APMU_SDH2_CLK_RES_CTRL 0xe0
+#define APMU_PMUA_MC_CTRL 0xe8
+#define APMU_PMU_CC2_AP 0x100
+#define APMU_PMUA_EM_CLK_RES_CTRL 0x104
+
+#define APMU_AUDIO_CLK_RES_CTRL 0x14c
+#define APMU_HDMI_CLK_RES_CTRL 0x1B8
+
+#define APMU_PCIE_CLK_RES_CTRL_0 0x3cc
+#define APMU_PCIE_CLK_RES_CTRL_1 0x3d4
+#define APMU_PCIE_CLK_RES_CTRL_2 0x3dc
+
+#define APMU_EMAC0_CLK_RES_CTRL 0x3e4
+#define APMU_EMAC1_CLK_RES_CTRL 0x3ec
+/* end of APMU register offset */
+
+/* APBC2 register offset */
+#define APBC2_UART1_CLK_RST 0x00
+#define APBC2_SSP2_CLK_RST 0x04
+#define APBC2_TWSI3_CLK_RST 0x08
+#define APBC2_RTC_CLK_RST 0x0c
+#define APBC2_TIMERS0_CLK_RST 0x10
+#define APBC2_KPC_CLK_RST 0x14
+#define APBC2_GPIO_CLK_RST 0x1c
+/* end of APBC2 register offset */
+
+enum spacemit_reset_base_type{
+ RST_BASE_TYPE_MPMU = 0,
+ RST_BASE_TYPE_APMU = 1,
+ RST_BASE_TYPE_APBC = 2,
+ RST_BASE_TYPE_APBS = 3,
+ RST_BASE_TYPE_CIU = 4,
+ RST_BASE_TYPE_DCIU = 5,
+ RST_BASE_TYPE_DDRC = 6,
+ RST_BASE_TYPE_AUDC = 7,
+ RST_BASE_TYPE_APBC2 = 8,
+};
+
+struct spacemit_reset_signal {
+ u32 offset;
+ u32 mask;
+ u32 deassert_val;
+ u32 assert_val;
+ enum spacemit_reset_base_type type;
+};
+
+struct spacemit_reset_base {
+ void __iomem *mpmu_base;
+ void __iomem *apmu_base;
+ void __iomem *apbc_base;
+ void __iomem *apbs_base;
+ void __iomem *ciu_base;
+ void __iomem *dciu_base;
+ void __iomem *ddrc_base;
+ void __iomem *audio_ctrl_base;
+ void __iomem *apbc2_base;
+};
+
+struct spacemit_reset {
+ struct spacemit_reset_base io_base;
+ const struct spacemit_reset_signal *signals;
+};
+
+enum {
+ RESET_TWSI6_SPL = 0,
+ RESET_TWSI8_SPL,
+ RESET_SDH_AXI_SPL,
+ RESET_SDH0_SPL,
+ RESET_USB_AXI_SPL,
+ RESET_USBP1_AXI_SPL,
+ RESET_USB3_0_SPL,
+ RESET_QSPI_SPL,
+ RESET_QSPI_BUS_SPL,
+ RESET_AES_SPL,
+ RESET_SDH2_SPL,
+ RESET_NUMBER_SPL
+};
+
+static const struct spacemit_reset_signal
+ k1_reset_signals[RESET_NUMBER] = {
+ [RESET_UART1] = { APBC_UART1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART2] = { APBC_UART2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_GPIO] = { APBC_GPIO_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM0] = { APBC_PWM0_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM1] = { APBC_PWM1_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM2] = { APBC_PWM2_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM3] = { APBC_PWM3_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM4] = { APBC_PWM4_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM5] = { APBC_PWM5_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM6] = { APBC_PWM6_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM7] = { APBC_PWM7_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM8] = { APBC_PWM8_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM9] = { APBC_PWM9_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM10] = { APBC_PWM10_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM11] = { APBC_PWM11_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM12] = { APBC_PWM12_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM13] = { APBC_PWM13_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM14] = { APBC_PWM14_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM15] = { APBC_PWM15_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM16] = { APBC_PWM16_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM17] = { APBC_PWM17_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM18] = { APBC_PWM18_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_PWM19] = { APBC_PWM19_CLK_RST, BIT(2)|BIT(0), BIT(0), BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_SSP3] = { APBC_SSP3_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART3] = { APBC_UART3_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_RTC] = { APBC_RTC_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI0] = { APBC_TWSI0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TIMERS1] = { APBC_TIMERS1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_AIB] = { APBC_AIB_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TIMERS2] = { APBC_TIMERS2_CLK_RST,BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_ONEWIRE] = { APBC_ONEWIRE_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_SSPA0] = { APBC_SSPA0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_SSPA1] = { APBC_SSPA1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_DRO] = { APBC_DRO_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_IR] = { APBC_IR_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI1] = { APBC_TWSI1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TSEN] = { APBC_TSEN_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI2] = { APBC_TWSI2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI4] = { APBC_TWSI4_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI5] = { APBC_TWSI5_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI6] = { APBC_TWSI6_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI7] = { APBC_TWSI7_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_TWSI8] = { APBC_TWSI8_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_IPC_AP2AUD] = { APBC_IPC_AP2AUD_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART4] = { APBC_UART4_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART5] = { APBC_UART5_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART6] = { APBC_UART6_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART7] = { APBC_UART7_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART8] = { APBC_UART8_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_UART9] = { APBC_UART9_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ [RESET_CAN0] = { APBC_CAN0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC },
+ /* MPMU */
+ [RESET_WDT] = { MPMU_WDTPCR, BIT(2), 0, BIT(2), RST_BASE_TYPE_MPMU },
+ /* APMU */
+ [RESET_JPG] = { APMU_JPG_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_CSI] = { APMU_CSI_CCIC2_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_CCIC2_PHY] = { APMU_CSI_CCIC2_CLK_RES_CTRL, BIT(2), BIT(2), 0, RST_BASE_TYPE_APMU },
+ [RESET_CCIC3_PHY] = { APMU_CSI_CCIC2_CLK_RES_CTRL, BIT(29), BIT(29), 0, RST_BASE_TYPE_APMU },
+ [RESET_ISP] = { APMU_ISP_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_ISP_AHB] = { APMU_ISP_CLK_RES_CTRL, BIT(3), BIT(3), 0, RST_BASE_TYPE_APMU },
+ [RESET_ISP_CI] = { APMU_ISP_CLK_RES_CTRL, BIT(16), BIT(16), 0, RST_BASE_TYPE_APMU },
+ [RESET_ISP_CPP] = { APMU_ISP_CLK_RES_CTRL, BIT(27), BIT(27), 0, RST_BASE_TYPE_APMU },
+ [RESET_LCD] = { APMU_LCD_CLK_RES_CTRL1, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
+ [RESET_DSI_ESC] = { APMU_LCD_CLK_RES_CTRL1, BIT(3), BIT(3), 0, RST_BASE_TYPE_APMU },
+ [RESET_V2D] = { APMU_LCD_CLK_RES_CTRL1, BIT(27), BIT(27), 0, RST_BASE_TYPE_APMU },
+ [RESET_MIPI] = { APMU_LCD_CLK_RES_CTRL1, BIT(15), BIT(15), 0, RST_BASE_TYPE_APMU },
+ [RESET_LCD_SPI] = { APMU_LCD_SPI_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_LCD_SPI_BUS] = { APMU_LCD_SPI_CLK_RES_CTRL, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
+ [RESET_LCD_SPI_HBUS] = { APMU_LCD_SPI_CLK_RES_CTRL, BIT(2), BIT(2), 0, RST_BASE_TYPE_APMU },
+ [RESET_LCD_MCLK] = { APMU_LCD_CLK_RES_CTRL2, BIT(9), BIT(9), 0, RST_BASE_TYPE_APMU },
+ [RESET_CCIC_4X] = { APMU_CCIC_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_CCIC1_PHY] = { APMU_CCIC_CLK_RES_CTRL, BIT(2), BIT(2), 0, RST_BASE_TYPE_APMU },
+ [RESET_SDH_AXI] = { APMU_SDH0_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_SDH0] = { APMU_SDH0_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_SDH1] = { APMU_SDH1_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_USB_AXI] = { APMU_USB_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_USBP1_AXI] = { APMU_USB_CLK_RES_CTRL, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
+ [RESET_USB3_0] = { APMU_USB_CLK_RES_CTRL, BIT(9)|BIT(10)|BIT(11), BIT(9)|BIT(10)|BIT(11), 0, RST_BASE_TYPE_APMU },
+ [RESET_QSPI] = { APMU_QSPI_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_QSPI_BUS] = { APMU_QSPI_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_DMA] = { APMU_DMA_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_AES] = { APMU_AES_CLK_RES_CTRL, BIT(4), BIT(4), 0, RST_BASE_TYPE_APMU },
+ [RESET_VPU] = { APMU_VPU_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_GPU] = { APMU_GPU_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_SDH2] = { APMU_SDH2_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_MC] = { APMU_PMUA_MC_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_EM_AXI] = { APMU_PMUA_EM_CLK_RES_CTRL, BIT(0), BIT(0), 0, RST_BASE_TYPE_APMU },
+ [RESET_EM] = { APMU_PMUA_EM_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_AUDIO_SYS] = { APMU_AUDIO_CLK_RES_CTRL, BIT(0)|BIT(2)|BIT(3), BIT(0)|BIT(2)|BIT(3), 0, RST_BASE_TYPE_APMU },
+ [RESET_HDMI] = { APMU_HDMI_CLK_RES_CTRL, BIT(9), BIT(9), 0, RST_BASE_TYPE_APMU },
+ [RESET_PCIE0] = { APMU_PCIE_CLK_RES_CTRL_0, BIT(3)|BIT(4)|BIT(5)|BIT(8), BIT(3)|BIT(4)|BIT(5), BIT(8), RST_BASE_TYPE_APMU },
+ [RESET_PCIE1] = { APMU_PCIE_CLK_RES_CTRL_1, BIT(3)|BIT(4)|BIT(5)|BIT(8), BIT(3)|BIT(4)|BIT(5), BIT(8), RST_BASE_TYPE_APMU },
+ [RESET_PCIE2] = { APMU_PCIE_CLK_RES_CTRL_2, 0x138, 0x38, 0x100, RST_BASE_TYPE_APMU },
+ [RESET_EMAC0] = { APMU_EMAC0_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_EMAC1] = { APMU_EMAC1_CLK_RES_CTRL, BIT(1), BIT(1), 0, RST_BASE_TYPE_APMU },
+ [RESET_SEC_UART1] = { APBC2_UART1_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ [RESET_SEC_SSP2] = { APBC2_SSP2_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ [RESET_SEC_TWSI3] = { APBC2_TWSI3_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ [RESET_SEC_RTC] = { APBC2_RTC_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ [RESET_SEC_TIMERS0] = { APBC2_TIMERS0_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ [RESET_SEC_KPC] = { APBC2_KPC_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ [RESET_SEC_GPIO] = { APBC2_GPIO_CLK_RST, BIT(2), 0, BIT(2), RST_BASE_TYPE_APBC2 },
+ };
+
+
+static u32 spacemit_reset_read(struct spacemit_reset *reset,
+ u32 id)
+{
+ void __iomem *base;
+
+ switch(reset->signals[id].type){
+ case RST_BASE_TYPE_APMU:
+ base = reset->io_base.apmu_base;
+ break;
+ case RST_BASE_TYPE_APBC:
+ base = reset->io_base.apbc_base;
+ break;
+ default:
+ base = reset->io_base.apbc_base;
+ break;
+ }
+
+ return readl(base + reset->signals[id].offset);
+}
+
+static void spacemit_reset_write(struct spacemit_reset *reset, u32 value,
+ u32 id)
+{
+ void __iomem *base;
+
+ switch (reset->signals[id].type) {
+ case RST_BASE_TYPE_APMU:
+ base = reset->io_base.apmu_base;
+ break;
+ case RST_BASE_TYPE_APBC:
+ base = reset->io_base.apbc_base;
+ break;
+ default:
+ base = reset->io_base.apbc_base;
+ break;
+ }
+
+ writel(value, base + reset->signals[id].offset);
+}
+
+static void spacemit_reset_set(struct reset_ctl *rst,
+ u32 id, bool assert)
+{
+ u32 value;
+ struct spacemit_reset *reset = dev_get_priv(rst->dev);
+
+ value = spacemit_reset_read(reset, id);
+
+ if(assert == true) {
+ value &= ~ reset->signals[id].mask;
+ value |=reset->signals[id].assert_val;
+ } else {
+ value &= ~reset->signals[id].mask;
+ value |= reset->signals[id].deassert_val;
+ }
+
+ spacemit_reset_write(reset, value, id);
+}
+
+static int spacemit_reset_update(struct reset_ctl *rst, bool assert)
+{
+ if(rst->id < RESET_UART1 || rst->id >= RESET_NUMBER)
+ return 0;
+
+ /* can not write to twsi8 */
+ if (rst->id == RESET_TWSI8)
+ return 0;
+
+ spacemit_reset_set(rst, rst->id, assert);
+ return 0;
+}
+
+static int spacemit_reset_assert(struct reset_ctl *rst)
+{
+ return spacemit_reset_update(rst, true);
+}
+
+static int spacemit_reset_deassert(struct reset_ctl *rst)
+{
+ return spacemit_reset_update(rst, false);
+}
+
+static int spacemit_k1_reset_probe(struct udevice *dev)
+{
+ struct spacemit_reset *reset = dev_get_priv(dev);
+
+ reset->io_base.mpmu_base = (void*)dev_remap_addr_index(dev, 0);
+ if (!reset->io_base.mpmu_base) {
+ pr_err("failed to map mpmu registers\n");
+ goto out;
+ }
+
+ reset->io_base.apmu_base = (void*)dev_remap_addr_index(dev, 1);
+ if (!reset->io_base.apmu_base) {
+ pr_err("failed to map apmu registers\n");
+ goto out;
+ }
+
+ reset->io_base.apbc_base = (void*)dev_remap_addr_index(dev, 2);
+ if (!reset->io_base.apbc_base) {
+ pr_err("failed to map apbc registers\n");
+ goto out;
+ }
+
+ reset->io_base.apbs_base = (void*)dev_remap_addr_index(dev, 3);
+ if (!reset->io_base.apbs_base) {
+ pr_err("failed to map apbs registers\n");
+ goto out;
+ }
+
+ reset->io_base.ciu_base = (void*)dev_remap_addr_index(dev, 4);
+ if (!reset->io_base.ciu_base) {
+ pr_err("failed to map ciu registers\n");
+ goto out;
+ }
+
+ reset->io_base.dciu_base = (void*)dev_remap_addr_index(dev, 5);
+ if (!reset->io_base.dciu_base) {
+ pr_err("failed to map dragon ciu registers\n");
+ goto out;
+ }
+
+ reset->io_base.ddrc_base = (void*)dev_remap_addr_index(dev, 6);
+ if (!reset->io_base.ddrc_base) {
+ pr_err("failed to map ddrc registers\n");
+ goto out;
+ }
+
+ reset->io_base.apbc2_base = (void*)dev_remap_addr_index(dev, 7);
+ if (!reset->io_base.apbc2_base) {
+ pr_err("failed to map apbc2 registers\n");
+ goto out;
+ }
+
+ reset->signals = k1_reset_signals;
+
+out:
+ return 0;
+}
+
+const struct reset_ops k1_reset_ops = {
+ .rst_assert = spacemit_reset_assert,
+ .rst_deassert = spacemit_reset_deassert,
+};
+
+static const struct udevice_id k1_reset_ids[] = {
+ { .compatible = "spacemit,k1-reset", },
+ {},
+};
+
+U_BOOT_DRIVER(k1_reset) = {
+ .name = "spacemit,k1-reset",
+ .id = UCLASS_RESET,
+ .ops = &k1_reset_ops,
+ .of_match = k1_reset_ids,
+ .probe = spacemit_k1_reset_probe,
+ .priv_auto = sizeof(struct spacemit_reset),
+};
\ No newline at end of file
--
2.39.5
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