KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted

Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.

Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>

1 files changed, 429 insertions, 0 deletions

diff --git a/drivers/reset/reset-eic7700.c b/drivers/reset/reset-eic7700.c
new file mode 100644
index 000000000..b72283b18
--- /dev/null
+++ b/drivers/reset/reset-eic7700.c
@@ -0,0 +1,429 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2025, Beijing ESWIN Computing Technology Co., Ltd..
+ * All rights reserved.
+ *
+ * ESWIN Reset Driver
+ *
+ * Authors:
+ *	Yifeng Huang <huangyifeng@eswincomputing.com>
+ *	Xuyang Dong <dongxuyang@eswincomputing.com>
+ */
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <dt-bindings/reset/eswin,eic7700-reset.h>
+
+#define SYSCRG_CLEAR_BOOT_INFO_OFFSET 0xC
+#define CLEAR_BOOT_FLAG_BIT BIT(0)
+#define SYSCRG_RESET_OFFSET 0x100
+
+/**
+ * struct eic7700_reset_data - reset controller information structure
+ * @rcdev: reset controller entity
+ * @regmap: regmap handle containing the memory-mapped reset registers
+ */
+struct eic7700_reset_data {
+	struct reset_controller_dev rcdev;
+	struct regmap *regmap;
+};
+
+static const struct regmap_config eic7700_regmap_config = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = 0x1fc,
+};
+
+struct eic7700_reg {
+	u32 reg;
+	u32 bit;
+};
+
+static inline struct eic7700_reset_data *
+to_eic7700_reset_data(struct reset_controller_dev *rcdev)
+{
+	return container_of(rcdev, struct eic7700_reset_data, rcdev);
+}
+
+#define EIC7700_RESET(id, reg, bit)[id] = \
+		{ SYSCRG_RESET_OFFSET + (reg) * sizeof(u32), BIT(bit) }
+
+/* mapping table for reset ID to register offset and reset bit */
+static const struct eic7700_reg eic7700_reset[] = {
+	EIC7700_RESET(EIC7700_RESET_NOC_NSP, 0, 0),
+	EIC7700_RESET(EIC7700_RESET_NOC_CFG, 0, 1),
+	EIC7700_RESET(EIC7700_RESET_RNOC_NSP, 0, 2),
+	EIC7700_RESET(EIC7700_RESET_SNOC_TCU, 0, 3),
+	EIC7700_RESET(EIC7700_RESET_SNOC_U84, 0, 4),
+	EIC7700_RESET(EIC7700_RESET_SNOC_PCIE_XSR, 0, 5),
+	EIC7700_RESET(EIC7700_RESET_SNOC_PCIE_XMR, 0, 6),
+	EIC7700_RESET(EIC7700_RESET_SNOC_PCIE_PR, 0, 7),
+	EIC7700_RESET(EIC7700_RESET_SNOC_NPU, 0, 8),
+	EIC7700_RESET(EIC7700_RESET_SNOC_JTAG, 0, 9),
+	EIC7700_RESET(EIC7700_RESET_SNOC_DSP, 0, 10),
+	EIC7700_RESET(EIC7700_RESET_SNOC_DDRC1_P2, 0, 11),
+	EIC7700_RESET(EIC7700_RESET_SNOC_DDRC1_P1, 0, 12),
+	EIC7700_RESET(EIC7700_RESET_SNOC_DDRC0_P2, 0, 13),
+	EIC7700_RESET(EIC7700_RESET_SNOC_DDRC0_P1, 0, 14),
+	EIC7700_RESET(EIC7700_RESET_SNOC_D2D, 0, 15),
+	EIC7700_RESET(EIC7700_RESET_SNOC_AON, 0, 16),
+	EIC7700_RESET(EIC7700_RESET_GPU_AXI, 1, 0),
+	EIC7700_RESET(EIC7700_RESET_GPU_CFG, 1, 1),
+	EIC7700_RESET(EIC7700_RESET_GPU_GRAY, 1, 2),
+	EIC7700_RESET(EIC7700_RESET_GPU_JONES, 1, 3),
+	EIC7700_RESET(EIC7700_RESET_GPU_SPU, 1, 4),
+	EIC7700_RESET(EIC7700_RESET_DSP_AXI, 2, 0),
+	EIC7700_RESET(EIC7700_RESET_DSP_CFG, 2, 1),
+	EIC7700_RESET(EIC7700_RESET_DSP_DIV4, 2, 2),
+	EIC7700_RESET(EIC7700_RESET_DSP_DIV0, 2, 4),
+	EIC7700_RESET(EIC7700_RESET_DSP_DIV1, 2, 5),
+	EIC7700_RESET(EIC7700_RESET_DSP_DIV2, 2, 6),
+	EIC7700_RESET(EIC7700_RESET_DSP_DIV3, 2, 7),
+	EIC7700_RESET(EIC7700_RESET_D2D_AXI, 3, 0),
+	EIC7700_RESET(EIC7700_RESET_D2D_CFG, 3, 1),
+	EIC7700_RESET(EIC7700_RESET_D2D_PRST, 3, 2),
+	EIC7700_RESET(EIC7700_RESET_D2D_RAW_PCS, 3, 4),
+	EIC7700_RESET(EIC7700_RESET_D2D_RX, 3, 5),
+	EIC7700_RESET(EIC7700_RESET_D2D_TX, 3, 6),
+	EIC7700_RESET(EIC7700_RESET_D2D_CORE, 3, 7),
+	EIC7700_RESET(EIC7700_RESET_DDR1_ARST, 4, 0),
+	EIC7700_RESET(EIC7700_RESET_DDR1_TRACE, 4, 6),
+	EIC7700_RESET(EIC7700_RESET_DDR0_ARST, 4, 16),
+	EIC7700_RESET(EIC7700_RESET_DDR_CFG, 4, 21),
+	EIC7700_RESET(EIC7700_RESET_DDR0_TRACE, 4, 22),
+	EIC7700_RESET(EIC7700_RESET_DDR_CORE, 4, 23),
+	EIC7700_RESET(EIC7700_RESET_DDR_PRST, 4, 26),
+	EIC7700_RESET(EIC7700_RESET_TCU_AXI, 5, 0),
+	EIC7700_RESET(EIC7700_RESET_TCU_CFG, 5, 1),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU0, 5, 4),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU1, 5, 5),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU2, 5, 6),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU3, 5, 7),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU4, 5, 8),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU5, 5, 9),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU6, 5, 10),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU7, 5, 11),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU8, 5, 12),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU9, 5, 13),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU10, 5, 14),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU11, 5, 15),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU12, 5, 16),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU13, 5, 17),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU14, 5, 18),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU15, 5, 19),
+	EIC7700_RESET(EIC7700_RESET_TCU_TBU16, 5, 20),
+	EIC7700_RESET(EIC7700_RESET_NPU_AXI, 6, 0),
+	EIC7700_RESET(EIC7700_RESET_NPU_CFG, 6, 1),
+	EIC7700_RESET(EIC7700_RESET_NPU_CORE, 6, 2),
+	EIC7700_RESET(EIC7700_RESET_NPU_E31CORE, 6, 3),
+	EIC7700_RESET(EIC7700_RESET_NPU_E31BUS, 6, 4),
+	EIC7700_RESET(EIC7700_RESET_NPU_E31DBG, 6, 5),
+	EIC7700_RESET(EIC7700_RESET_NPU_LLC, 6, 6),
+	EIC7700_RESET(EIC7700_RESET_HSP_AXI, 7, 0),
+	EIC7700_RESET(EIC7700_RESET_HSP_CFG, 7, 1),
+	EIC7700_RESET(EIC7700_RESET_HSP_POR, 7, 2),
+	EIC7700_RESET(EIC7700_RESET_MSHC0_PHY, 7, 3),
+	EIC7700_RESET(EIC7700_RESET_MSHC1_PHY, 7, 4),
+	EIC7700_RESET(EIC7700_RESET_MSHC2_PHY, 7, 5),
+	EIC7700_RESET(EIC7700_RESET_MSHC0_TXRX, 7, 6),
+	EIC7700_RESET(EIC7700_RESET_MSHC1_TXRX, 7, 7),
+	EIC7700_RESET(EIC7700_RESET_MSHC2_TXRX, 7, 8),
+	EIC7700_RESET(EIC7700_RESET_SATA_ASIC0, 7, 9),
+	EIC7700_RESET(EIC7700_RESET_SATA_OOB, 7, 10),
+	EIC7700_RESET(EIC7700_RESET_SATA_PMALIVE, 7, 11),
+	EIC7700_RESET(EIC7700_RESET_SATA_RBC, 7, 12),
+	EIC7700_RESET(EIC7700_RESET_DMA0, 7, 13),
+	EIC7700_RESET(EIC7700_RESET_HSP_DMA, 7, 14),
+	EIC7700_RESET(EIC7700_RESET_USB0_VAUX, 7, 15),
+	EIC7700_RESET(EIC7700_RESET_USB1_VAUX, 7, 16),
+	EIC7700_RESET(EIC7700_RESET_HSP_SD1_PRST, 7, 17),
+	EIC7700_RESET(EIC7700_RESET_HSP_SD0_PRST, 7, 18),
+	EIC7700_RESET(EIC7700_RESET_HSP_EMMC_PRST, 7, 19),
+	EIC7700_RESET(EIC7700_RESET_HSP_DMA_PRST, 7, 20),
+	EIC7700_RESET(EIC7700_RESET_HSP_SD1_ARST, 7, 21),
+	EIC7700_RESET(EIC7700_RESET_HSP_SD0_ARST, 7, 22),
+	EIC7700_RESET(EIC7700_RESET_HSP_EMMC_ARST, 7, 23),
+	EIC7700_RESET(EIC7700_RESET_HSP_DMA_ARST, 7, 24),
+	EIC7700_RESET(EIC7700_RESET_HSP_ETH1_ARST, 7, 25),
+	EIC7700_RESET(EIC7700_RESET_HSP_ETH0_ARST, 7, 26),
+	EIC7700_RESET(EIC7700_RESET_SATA_ARST, 7, 27),
+	EIC7700_RESET(EIC7700_RESET_PCIE_CFG, 8, 0),
+	EIC7700_RESET(EIC7700_RESET_PCIE_POWEUP, 8, 1),
+	EIC7700_RESET(EIC7700_RESET_PCIE_PERST, 8, 2),
+	EIC7700_RESET(EIC7700_RESET_I2C0, 9, 0),
+	EIC7700_RESET(EIC7700_RESET_I2C1, 9, 1),
+	EIC7700_RESET(EIC7700_RESET_I2C2, 9, 2),
+	EIC7700_RESET(EIC7700_RESET_I2C3, 9, 3),
+	EIC7700_RESET(EIC7700_RESET_I2C4, 9, 4),
+	EIC7700_RESET(EIC7700_RESET_I2C5, 9, 5),
+	EIC7700_RESET(EIC7700_RESET_I2C6, 9, 6),
+	EIC7700_RESET(EIC7700_RESET_I2C7, 9, 7),
+	EIC7700_RESET(EIC7700_RESET_I2C8, 9, 8),
+	EIC7700_RESET(EIC7700_RESET_I2C9, 9, 9),
+	EIC7700_RESET(EIC7700_RESET_FAN, 10, 0),
+	EIC7700_RESET(EIC7700_RESET_PVT0, 11, 0),
+	EIC7700_RESET(EIC7700_RESET_PVT1, 11, 1),
+	EIC7700_RESET(EIC7700_RESET_MBOX0, 12, 0),
+	EIC7700_RESET(EIC7700_RESET_MBOX1, 12, 1),
+	EIC7700_RESET(EIC7700_RESET_MBOX2, 12, 2),
+	EIC7700_RESET(EIC7700_RESET_MBOX3, 12, 3),
+	EIC7700_RESET(EIC7700_RESET_MBOX4, 12, 4),
+	EIC7700_RESET(EIC7700_RESET_MBOX5, 12, 5),
+	EIC7700_RESET(EIC7700_RESET_MBOX6, 12, 6),
+	EIC7700_RESET(EIC7700_RESET_MBOX7, 12, 7),
+	EIC7700_RESET(EIC7700_RESET_MBOX8, 12, 8),
+	EIC7700_RESET(EIC7700_RESET_MBOX9, 12, 9),
+	EIC7700_RESET(EIC7700_RESET_MBOX10, 12, 10),
+	EIC7700_RESET(EIC7700_RESET_MBOX11, 12, 11),
+	EIC7700_RESET(EIC7700_RESET_MBOX12, 12, 12),
+	EIC7700_RESET(EIC7700_RESET_MBOX13, 12, 13),
+	EIC7700_RESET(EIC7700_RESET_MBOX14, 12, 14),
+	EIC7700_RESET(EIC7700_RESET_MBOX15, 12, 15),
+	EIC7700_RESET(EIC7700_RESET_UART0, 13, 0),
+	EIC7700_RESET(EIC7700_RESET_UART1, 13, 1),
+	EIC7700_RESET(EIC7700_RESET_UART2, 13, 2),
+	EIC7700_RESET(EIC7700_RESET_UART3, 13, 3),
+	EIC7700_RESET(EIC7700_RESET_UART4, 13, 4),
+	EIC7700_RESET(EIC7700_RESET_GPIO0, 14, 0),
+	EIC7700_RESET(EIC7700_RESET_GPIO1, 14, 1),
+	EIC7700_RESET(EIC7700_RESET_TIMER, 15, 0),
+	EIC7700_RESET(EIC7700_RESET_SSI0, 16, 0),
+	EIC7700_RESET(EIC7700_RESET_SSI1, 16, 1),
+	EIC7700_RESET(EIC7700_RESET_WDT0, 17, 0),
+	EIC7700_RESET(EIC7700_RESET_WDT1, 17, 1),
+	EIC7700_RESET(EIC7700_RESET_WDT2, 17, 2),
+	EIC7700_RESET(EIC7700_RESET_WDT3, 17, 3),
+	EIC7700_RESET(EIC7700_RESET_LSP_CFG, 18, 0),
+	EIC7700_RESET(EIC7700_RESET_U84_CORE0, 19, 0),
+	EIC7700_RESET(EIC7700_RESET_U84_CORE1, 19, 1),
+	EIC7700_RESET(EIC7700_RESET_U84_CORE2, 19, 2),
+	EIC7700_RESET(EIC7700_RESET_U84_CORE3, 19, 3),
+	EIC7700_RESET(EIC7700_RESET_U84_BUS, 19, 4),
+	EIC7700_RESET(EIC7700_RESET_U84_DBG, 19, 5),
+	EIC7700_RESET(EIC7700_RESET_U84_TRACECOM, 19, 6),
+	EIC7700_RESET(EIC7700_RESET_U84_TRACE0, 19, 8),
+	EIC7700_RESET(EIC7700_RESET_U84_TRACE1, 19, 9),
+	EIC7700_RESET(EIC7700_RESET_U84_TRACE2, 19, 10),
+	EIC7700_RESET(EIC7700_RESET_U84_TRACE3, 19, 11),
+	EIC7700_RESET(EIC7700_RESET_SCPU_CORE, 20, 0),
+	EIC7700_RESET(EIC7700_RESET_SCPU_BUS, 20, 1),
+	EIC7700_RESET(EIC7700_RESET_SCPU_DBG, 20, 2),
+	EIC7700_RESET(EIC7700_RESET_LPCPU_CORE, 21, 0),
+	EIC7700_RESET(EIC7700_RESET_LPCPU_BUS, 21, 1),
+	EIC7700_RESET(EIC7700_RESET_LPCPU_DBG, 21, 2),
+	EIC7700_RESET(EIC7700_RESET_VC_CFG, 22, 0),
+	EIC7700_RESET(EIC7700_RESET_VC_AXI, 22, 1),
+	EIC7700_RESET(EIC7700_RESET_VC_MONCFG, 22, 2),
+	EIC7700_RESET(EIC7700_RESET_JD_CFG, 23, 0),
+	EIC7700_RESET(EIC7700_RESET_JD_AXI, 23, 1),
+	EIC7700_RESET(EIC7700_RESET_JE_CFG, 24, 0),
+	EIC7700_RESET(EIC7700_RESET_JE_AXI, 24, 1),
+	EIC7700_RESET(EIC7700_RESET_VD_CFG, 25, 0),
+	EIC7700_RESET(EIC7700_RESET_VD_AXI, 25, 1),
+	EIC7700_RESET(EIC7700_RESET_VE_AXI, 26, 0),
+	EIC7700_RESET(EIC7700_RESET_VE_CFG, 26, 1),
+	EIC7700_RESET(EIC7700_RESET_G2D_CORE, 27, 0),
+	EIC7700_RESET(EIC7700_RESET_G2D_CFG, 27, 1),
+	EIC7700_RESET(EIC7700_RESET_G2D_AXI, 27, 2),
+	EIC7700_RESET(EIC7700_RESET_VI_AXI, 28, 0),
+	EIC7700_RESET(EIC7700_RESET_VI_CFG, 28, 1),
+	EIC7700_RESET(EIC7700_RESET_VI_DWE, 28, 2),
+	EIC7700_RESET(EIC7700_RESET_DVP, 29, 0),
+	EIC7700_RESET(EIC7700_RESET_ISP0, 30, 0),
+	EIC7700_RESET(EIC7700_RESET_ISP1, 31, 0),
+	EIC7700_RESET(EIC7700_RESET_SHUTTR0, 32, 0),
+	EIC7700_RESET(EIC7700_RESET_SHUTTR1, 32, 1),
+	EIC7700_RESET(EIC7700_RESET_SHUTTR2, 32, 2),
+	EIC7700_RESET(EIC7700_RESET_SHUTTR3, 32, 3),
+	EIC7700_RESET(EIC7700_RESET_SHUTTR4, 32, 4),
+	EIC7700_RESET(EIC7700_RESET_SHUTTR5, 32, 5),
+	EIC7700_RESET(EIC7700_RESET_VO_MIPI, 33, 0),
+	EIC7700_RESET(EIC7700_RESET_VO_PRST, 33, 1),
+	EIC7700_RESET(EIC7700_RESET_VO_HDMI_PRST, 33, 3),
+	EIC7700_RESET(EIC7700_RESET_VO_HDMI_PHY, 33, 4),
+	EIC7700_RESET(EIC7700_RESET_VO_HDMI, 33, 5),
+	EIC7700_RESET(EIC7700_RESET_VO_I2S, 34, 0),
+	EIC7700_RESET(EIC7700_RESET_VO_I2S_PRST, 34, 1),
+	EIC7700_RESET(EIC7700_RESET_VO_AXI, 35, 0),
+	EIC7700_RESET(EIC7700_RESET_VO_CFG, 35, 1),
+	EIC7700_RESET(EIC7700_RESET_VO_DC, 35, 2),
+	EIC7700_RESET(EIC7700_RESET_VO_DC_PRST, 35, 3),
+	EIC7700_RESET(EIC7700_RESET_BOOTSPI_HRST, 36, 0),
+	EIC7700_RESET(EIC7700_RESET_BOOTSPI, 36, 1),
+	EIC7700_RESET(EIC7700_RESET_ANO1, 37, 0),
+	EIC7700_RESET(EIC7700_RESET_ANO0, 38, 0),
+	EIC7700_RESET(EIC7700_RESET_DMA1_ARST, 39, 0),
+	EIC7700_RESET(EIC7700_RESET_DMA1_HRST, 39, 1),
+	EIC7700_RESET(EIC7700_RESET_FPRT, 40, 0),
+	EIC7700_RESET(EIC7700_RESET_HBLOCK, 41, 0),
+	EIC7700_RESET(EIC7700_RESET_SECSR, 42, 0),
+	EIC7700_RESET(EIC7700_RESET_OTP, 43, 0),
+	EIC7700_RESET(EIC7700_RESET_PKA, 44, 0),
+	EIC7700_RESET(EIC7700_RESET_SPACC, 45, 0),
+	EIC7700_RESET(EIC7700_RESET_TRNG, 46, 0),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_0, 48, 0),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_1, 48, 1),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_2, 48, 2),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_3, 48, 3),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_4, 48, 4),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_5, 48, 5),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_6, 48, 6),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_7, 48, 7),
+	EIC7700_RESET(EIC7700_RESET_TIMER0_N, 48, 8),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_0, 49, 0),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_1, 49, 1),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_2, 49, 2),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_3, 49, 3),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_4, 49, 4),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_5, 49, 5),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_6, 49, 6),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_7, 49, 7),
+	EIC7700_RESET(EIC7700_RESET_TIMER1_N, 49, 8),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_0, 50, 0),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_1, 50, 1),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_2, 50, 2),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_3, 50, 3),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_4, 50, 4),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_5, 50, 5),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_6, 50, 6),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_7, 50, 7),
+	EIC7700_RESET(EIC7700_RESET_TIMER2_N, 50, 8),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_0, 51, 0),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_1, 51, 1),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_2, 51, 2),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_3, 51, 3),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_4, 51, 4),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_5, 51, 5),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_6, 51, 6),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_7, 51, 7),
+	EIC7700_RESET(EIC7700_RESET_TIMER3_N, 51, 8),
+	EIC7700_RESET(EIC7700_RESET_RTC, 52, 0),
+	EIC7700_RESET(EIC7700_RESET_MNOC_SNOC_NSP, 53, 0),
+	EIC7700_RESET(EIC7700_RESET_MNOC_VC, 53, 1),
+	EIC7700_RESET(EIC7700_RESET_MNOC_CFG, 53, 2),
+	EIC7700_RESET(EIC7700_RESET_MNOC_HSP, 53, 3),
+	EIC7700_RESET(EIC7700_RESET_MNOC_GPU, 53, 4),
+	EIC7700_RESET(EIC7700_RESET_MNOC_DDRC1_P3, 53, 5),
+	EIC7700_RESET(EIC7700_RESET_MNOC_DDRC0_P3, 53, 6),
+	EIC7700_RESET(EIC7700_RESET_RNOC_VO, 54, 0),
+	EIC7700_RESET(EIC7700_RESET_RNOC_VI, 54, 1),
+	EIC7700_RESET(EIC7700_RESET_RNOC_SNOC_NSP, 54, 2),
+	EIC7700_RESET(EIC7700_RESET_RNOC_CFG, 54, 3),
+	EIC7700_RESET(EIC7700_RESET_MNOC_DDRC1_P4, 54, 4),
+	EIC7700_RESET(EIC7700_RESET_MNOC_DDRC0_P4, 54, 5),
+	EIC7700_RESET(EIC7700_RESET_CNOC_VO_CFG, 55, 0),
+	EIC7700_RESET(EIC7700_RESET_CNOC_VI_CFG, 55, 1),
+	EIC7700_RESET(EIC7700_RESET_CNOC_VC_CFG, 55, 2),
+	EIC7700_RESET(EIC7700_RESET_CNOC_TCU_CFG, 55, 3),
+	EIC7700_RESET(EIC7700_RESET_CNOC_PCIE_CFG, 55, 4),
+	EIC7700_RESET(EIC7700_RESET_CNOC_NPU_CFG, 55, 5),
+	EIC7700_RESET(EIC7700_RESET_CNOC_LSP_CFG, 55, 6),
+	EIC7700_RESET(EIC7700_RESET_CNOC_HSP_CFG, 55, 7),
+	EIC7700_RESET(EIC7700_RESET_CNOC_GPU_CFG, 55, 8),
+	EIC7700_RESET(EIC7700_RESET_CNOC_DSPT_CFG, 55, 9),
+	EIC7700_RESET(EIC7700_RESET_CNOC_DDRT1_CFG, 55, 10),
+	EIC7700_RESET(EIC7700_RESET_CNOC_DDRT0_CFG, 55, 11),
+	EIC7700_RESET(EIC7700_RESET_CNOC_D2D_CFG, 55, 12),
+	EIC7700_RESET(EIC7700_RESET_CNOC_CFG, 55, 13),
+	EIC7700_RESET(EIC7700_RESET_CNOC_CLMM_CFG, 55, 14),
+	EIC7700_RESET(EIC7700_RESET_CNOC_AON_CFG, 55, 15),
+	EIC7700_RESET(EIC7700_RESET_LNOC_CFG, 56, 0),
+	EIC7700_RESET(EIC7700_RESET_LNOC_NPU_LLC, 56, 1),
+	EIC7700_RESET(EIC7700_RESET_LNOC_DDRC1_P0, 56, 2),
+	EIC7700_RESET(EIC7700_RESET_LNOC_DDRC0_P0, 56, 3),
+};
+
+static int eic7700_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	struct eic7700_reset_data *data = to_eic7700_reset_data(rcdev);
+
+	return regmap_clear_bits(data->regmap, eic7700_reset[id].reg,
+				 eic7700_reset[id].bit);
+}
+
+static int eic7700_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	struct eic7700_reset_data *data = to_eic7700_reset_data(rcdev);
+
+	return regmap_set_bits(data->regmap, eic7700_reset[id].reg,
+			       eic7700_reset[id].bit);
+}
+
+static int eic7700_reset_reset(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	int ret;
+
+	ret = eic7700_reset_assert(rcdev, id);
+	if (ret)
+		return ret;
+
+	usleep_range(10, 15);
+
+	return eic7700_reset_deassert(rcdev, id);
+}
+
+static const struct reset_control_ops eic7700_reset_ops = {
+	.reset = eic7700_reset_reset,
+	.assert = eic7700_reset_assert,
+	.deassert = eic7700_reset_deassert,
+};
+
+static const struct of_device_id eic7700_reset_dt_ids[] = {
+	{ .compatible = "eswin,eic7700-reset", },
+	{ /* sentinel */ }
+};
+
+static int eic7700_reset_probe(struct platform_device *pdev)
+{
+	struct eic7700_reset_data *data;
+	struct device *dev = &pdev->dev;
+	void __iomem *base;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	data->regmap = devm_regmap_init_mmio(dev, base, &eic7700_regmap_config);
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(dev, PTR_ERR(data->regmap),
+				     "failed to get regmap!\n");
+
+	data->rcdev.owner = THIS_MODULE;
+	data->rcdev.ops = &eic7700_reset_ops;
+	data->rcdev.of_node = dev->of_node;
+	data->rcdev.of_reset_n_cells = 1;
+	data->rcdev.dev = dev;
+	data->rcdev.nr_resets = ARRAY_SIZE(eic7700_reset);
+
+	/* clear boot flag so u84 and scpu could be reseted by software */
+	regmap_set_bits(data->regmap, SYSCRG_CLEAR_BOOT_INFO_OFFSET,
+			CLEAR_BOOT_FLAG_BIT);
+	msleep(50);
+
+	return devm_reset_controller_register(dev, &data->rcdev);
+}
+
+static struct platform_driver eic7700_reset_driver = {
+	.probe	= eic7700_reset_probe,
+	.driver = {
+		.name		= "eic7700-reset",
+		.of_match_table	= eic7700_reset_dt_ids,
+	},
+};
+
+builtin_platform_driver(eic7700_reset_driver);