Merge tag 'nand/for-7.3' into mtd/next

* Raw NAND changes
- Sunxi: Support added for the H616 compatible
- Qcom: Support added for the MDM9607 compatible
- Support for the Toshiba TC58NVG1S3H part
- GPMI: New debugfs entry to expose the chip geometry
- PL353: Timing updates and software ECC support have been fixed

* SPI NAND changes
- fmsh: Support added for FM25G{01,02}B chips
- HeYangTek: Support added for HYF1GQ4UDACAE

Aside from these main changes, there is the usual load of misc fixes and
hardening changes.

15 files changed, 535 insertions, 71 deletions

diff --git a/drivers/mtd/nand/ecc-realtek.c b/drivers/mtd/nand/ecc-realtek.c
index 7d003fd72027..76d75e2107df 100644
--- a/drivers/mtd/nand/ecc-realtek.c
+++ b/drivers/mtd/nand/ecc-realtek.c
@@ -450,6 +450,7 @@ static const struct of_device_id rtl_ecc_of_ids[] = {
 	},
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, rtl_ecc_of_ids);
 
 static struct platform_driver rtl_ecc_driver = {
 	.driver	= {
diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index e7fdf532c5fe..8a19408abb63 100644
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -1799,8 +1799,7 @@ atmel_nand_controller_legacy_add_nands(struct atmel_nand_controller *nc)
 	 * Legacy bindings only allow connecting a single NAND with a unique CS
 	 * line to the controller.
 	 */
-	nand = devm_kzalloc(nc->dev, sizeof(*nand) + sizeof(*nand->cs),
-			    GFP_KERNEL);
+	nand = devm_kzalloc(nc->dev, struct_size(nand, cs, 1), GFP_KERNEL);
 	if (!nand)
 		return -ENOMEM;
 
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index c1f766cb225a..527165ccc839 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -7,6 +7,7 @@
  */
 #include <linux/cleanup.h>
 #include <linux/clk.h>
+#include <linux/debugfs.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/sched/task_stack.h>
@@ -732,6 +733,31 @@ static int common_nfc_set_geometry(struct gpmi_nand_data *this)
 	return err;
 }
 
+#ifdef CONFIG_DEBUG_FS
+static void bch_remove_debugfs(void *data)
+{
+	struct gpmi_nand_data *this = data;
+
+	debugfs_remove_recursive(this->dbg_root);
+	this->dbg_root = NULL;
+}
+
+static void bch_create_debugfs(struct gpmi_nand_data *this)
+{
+	struct bch_geometry *bch_geo = &this->bch_geometry;
+
+	this->dbg_root = debugfs_create_dir("gpmi-nand", NULL);
+	this->dbg_bch_geo.data = (void *)bch_geo;
+	this->dbg_bch_geo.size = sizeof(struct bch_geometry);
+	this->raw_mode = true;
+	debugfs_create_blob("bch_geometry", 0444, this->dbg_root, &this->dbg_bch_geo);
+	debugfs_create_bool("raw_mode", 0444, this->dbg_root, &this->raw_mode);
+	devm_add_action_or_reset(this->dev, bch_remove_debugfs, this);
+}
+#else
+static void bch_create_debugfs(struct gpmi_nand_data *this) {}
+#endif /* CONFIG_DEBUG_FS */
+
 /* Configures the geometry for BCH.  */
 static int bch_set_geometry(struct gpmi_nand_data *this)
 {
@@ -2282,6 +2308,9 @@ static int gpmi_init_last(struct gpmi_nand_data *this)
 	if (ret)
 		return ret;
 
+	/* save BCH geometry to debugfs if CONFIG_DEBUG_FS is enabled */
+	bch_create_debugfs(this);
+
 	/* Init the nand_ecc_ctrl{} */
 	ecc->read_page	= gpmi_ecc_read_page;
 	ecc->write_page	= gpmi_ecc_write_page;
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
index 3e9bc985e44a..80c32efbaef8 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
@@ -161,6 +161,12 @@ struct gpmi_nand_data {
 #define DMA_CHANS		8
 	struct dma_chan		*dma_chans[DMA_CHANS];
 	struct completion	dma_done;
+
+#ifdef CONFIG_DEBUG_FS
+	struct			dentry *dbg_root;
+	struct			debugfs_blob_wrapper dbg_bch_geo;
+	bool			raw_mode;
+#endif
 };
 
 /* BCH : Status Block Completion Codes */
diff --git a/drivers/mtd/nand/raw/nand_ids.c b/drivers/mtd/nand/raw/nand_ids.c
index 62a8cf86d9e2..08707ce9d7c0 100644
--- a/drivers/mtd/nand/raw/nand_ids.c
+++ b/drivers/mtd/nand/raw/nand_ids.c
@@ -29,6 +29,9 @@ struct nand_flash_dev nand_flash_ids[] = {
 	{"TC58NVG0S3E 1G 3.3V 8-bit",
 		{ .id = {0x98, 0xd1, 0x90, 0x15, 0x76, 0x14, 0x01, 0x00} },
 		  SZ_2K, SZ_128, SZ_128K, 0, 8, 64, NAND_ECC_INFO(1, SZ_512), },
+	{"TC58NVG1S3H 2G 3.3V 8-bit",
+		{ .id = {0x98, 0xda, 0x90, 0x15, 0x76} },
+		  SZ_2K, SZ_256, SZ_128K, 0, 5, 128, NAND_ECC_INFO(8, SZ_512) },
 	{"TC58NVG2S0F 4G 3.3V 8-bit",
 		{ .id = {0x98, 0xdc, 0x90, 0x26, 0x76, 0x15, 0x01, 0x08} },
 		  SZ_4K, SZ_512, SZ_256K, 0, 8, 224, NAND_ECC_INFO(4, SZ_512) },
diff --git a/drivers/mtd/nand/raw/nand_onfi.c b/drivers/mtd/nand/raw/nand_onfi.c
index cd3ad373883e..b5e304c35738 100644
--- a/drivers/mtd/nand/raw/nand_onfi.c
+++ b/drivers/mtd/nand/raw/nand_onfi.c
@@ -35,16 +35,21 @@ static int nand_flash_detect_ext_param_page(struct nand_chip *chip,
 					    struct nand_onfi_params *p)
 {
 	struct nand_device *base = &chip->base;
+	struct mtd_info *mtd = nand_to_mtd(chip);
 	struct nand_ecc_props requirements;
 	struct onfi_ext_param_page *ep;
 	struct onfi_ext_section *s;
 	struct onfi_ext_ecc_info *ecc;
+	size_t remaining, section_len;
 	uint8_t *cursor;
 	int ret;
 	int len;
 	int i;
 
 	len = le16_to_cpu(p->ext_param_page_length) * 16;
+	if (len < sizeof(*ep))
+		return -EINVAL;
+
 	ep = kmalloc(len, GFP_KERNEL);
 	if (!ep)
 		return -ENOMEM;
@@ -77,11 +82,29 @@ static int nand_flash_detect_ext_param_page(struct nand_chip *chip,
 
 	/* find the ECC section. */
 	cursor = (uint8_t *)(ep + 1);
+	remaining = len - sizeof(*ep);
 	for (i = 0; i < ONFI_EXT_SECTION_MAX; i++) {
 		s = ep->sections + i;
-		if (s->type == ONFI_SECTION_TYPE_2)
+		section_len = s->length * 16;
+		if (section_len > remaining) {
+			dev_dbg(&mtd->dev,
+				"ONFI extended parameter section %d exceeds page\n",
+				i);
+			goto ext_out;
+		}
+
+		if (s->type == ONFI_SECTION_TYPE_2) {
+			if (section_len < sizeof(*ecc)) {
+				dev_dbg(&mtd->dev,
+					"ONFI extended parameter ECC section %d is too short\n",
+					i);
+				goto ext_out;
+			}
 			break;
-		cursor += s->length * 16;
+		}
+
+		cursor += section_len;
+		remaining -= section_len;
 	}
 	if (i == ONFI_EXT_SECTION_MAX) {
 		pr_debug("We can not find the ECC section.\n");
diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c
index d3d34d71921f..32062b26a1f6 100644
--- a/drivers/mtd/nand/raw/nand_toshiba.c
+++ b/drivers/mtd/nand/raw/nand_toshiba.c
@@ -287,7 +287,9 @@ static int toshiba_nand_init(struct nand_chip *chip)
 	if (!strncmp("TC58NVG0S3E", chip->parameters.model,
 		     sizeof("TC58NVG0S3E") - 1))
 		tc58nvg0s3e_init(chip);
-	if ((!strncmp("TH58NVG2S3HBAI4", chip->parameters.model,
+	if ((!strncmp("TC58NVG1S3H", chip->parameters.model,
+		      sizeof("TC58NVG1S3H") - 1)) ||
+	    (!strncmp("TH58NVG2S3HBAI4", chip->parameters.model,
 		     sizeof("TH58NVG2S3HBAI4") - 1)) ||
 	    (!strncmp("TH58NVG3S0HBAI4", chip->parameters.model,
 		     sizeof("TH58NVG3S0HBAI4") - 1)))
diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c
index 39e297486721..552f36da79fc 100644
--- a/drivers/mtd/nand/raw/omap2.c
+++ b/drivers/mtd/nand/raw/omap2.c
@@ -2318,7 +2318,11 @@ static void omap_nand_remove(struct platform_device *pdev)
 	nand_cleanup(nand_chip);
 }
 
-/* omap_nand_ids defined in linux/platform_data/mtd-nand-omap2.h */
+static const struct of_device_id omap_nand_ids[] = {
+        { .compatible = "ti,omap2-nand" },
+        { .compatible = "ti,am64-nand" },
+        { }
+};
 MODULE_DEVICE_TABLE(of, omap_nand_ids);
 
 static struct platform_driver omap_nand_driver = {
diff --git a/drivers/mtd/nand/raw/pl35x-nand-controller.c b/drivers/mtd/nand/raw/pl35x-nand-controller.c
index 06f8f1e14b9c..bd89aaadd1b2 100644
--- a/drivers/mtd/nand/raw/pl35x-nand-controller.c
+++ b/drivers/mtd/nand/raw/pl35x-nand-controller.c
@@ -862,8 +862,11 @@ static int pl35x_nfc_setup_interface(struct nand_chip *chip, int cs,
 			  PL35X_SMC_NAND_TAR_CYCLES(tmgs.t_ar) |
 			  PL35X_SMC_NAND_TRR_CYCLES(tmgs.t_rr);
 
-	writel(plnand->timings, nfc->conf_regs + PL35X_SMC_CYCLES);
-	pl35x_smc_update_regs(nfc);
+	/*
+	 * Reset nfc->selected_chip so the next command will cause the timing
+	 * registers to be updated in ->*_select_target().
+	 */
+	nfc->selected_chip = NULL;
 
 	return 0;
 }
@@ -914,7 +917,6 @@ static int pl35x_nand_init_hw_ecc_controller(struct pl35x_nandc *nfc,
 	chip->ecc.steps = mtd->writesize / chip->ecc.size;
 	chip->ecc.read_page = pl35x_nand_read_page_hwecc;
 	chip->ecc.write_page = pl35x_nand_write_page_hwecc;
-	chip->ecc.write_page_raw = nand_monolithic_write_page_raw;
 	pl35x_smc_set_ecc_pg_size(nfc, chip, mtd->writesize);
 
 	nfc->ecc_buf = devm_kmalloc(nfc->dev, chip->ecc.bytes * chip->ecc.steps,
@@ -973,18 +975,19 @@ static int pl35x_nand_attach_chip(struct nand_chip *chip)
 
 	switch (chip->ecc.engine_type) {
 	case NAND_ECC_ENGINE_TYPE_ON_DIE:
-		dev_dbg(nfc->dev, "Using on-die ECC\n");
+		dev_dbg(nfc->dev, "Using on-die hardware ECC\n");
 		/* Keep these legacy BBT descriptors for ON_DIE situations */
 		chip->bbt_td = &bbt_main_descr;
 		chip->bbt_md = &bbt_mirror_descr;
 		fallthrough;
 	case NAND_ECC_ENGINE_TYPE_NONE:
+		dev_dbg(nfc->dev, "Using no ECC engine\n");
+		break;
 	case NAND_ECC_ENGINE_TYPE_SOFT:
-		dev_dbg(nfc->dev, "Using software ECC (Hamming 1-bit/512B)\n");
-		chip->ecc.write_page_raw = nand_monolithic_write_page_raw;
+		dev_dbg(nfc->dev, "Using software ECC\n");
 		break;
 	case NAND_ECC_ENGINE_TYPE_ON_HOST:
-		dev_dbg(nfc->dev, "Using hardware ECC\n");
+		dev_dbg(nfc->dev, "Using on-host hardware ECC\n");
 		ret = pl35x_nand_init_hw_ecc_controller(nfc, chip);
 		if (ret)
 			return ret;
@@ -995,6 +998,9 @@ static int pl35x_nand_attach_chip(struct nand_chip *chip)
 		return -EINVAL;
 	}
 
+	chip->ecc.read_page_raw = nand_monolithic_read_page_raw;
+	chip->ecc.write_page_raw = nand_monolithic_write_page_raw;
+
 	return 0;
 }
 
diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index 4b80ce084d9a..d7642db2e2df 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -1564,7 +1564,7 @@ static int qcom_op_cmd_mapping(struct nand_chip *chip, u8 opcode,
 		cmd = OP_FETCH_ID;
 		break;
 	case NAND_CMD_PARAM:
-		if (nandc->props->qpic_version2)
+		if (nandc->props->has_onfi_read_op)
 			cmd = OP_PAGE_READ_ONFI_READ;
 		else
 			cmd = OP_PAGE_READ;
@@ -1903,7 +1903,7 @@ static int qcom_param_page_type_exec(struct nand_chip *chip,  const struct nand_
 		nandc->regs->ecc_buf_cfg = cpu_to_le32(ECC_CFG_ECC_DISABLE);
 
 	/* configure CMD1 and VLD for ONFI param probing in QPIC v1 */
-	if (!nandc->props->qpic_version2) {
+	if (!nandc->props->has_onfi_read_op) {
 		nandc->regs->vld = cpu_to_le32((nandc->vld & ~READ_START_VLD));
 		nandc->regs->cmd1 = cpu_to_le32((nandc->cmd1 & ~READ_ADDR_MASK) |
 						FIELD_PREP(READ_ADDR_MASK, NAND_CMD_PARAM));
@@ -1911,7 +1911,7 @@ static int qcom_param_page_type_exec(struct nand_chip *chip,  const struct nand_
 
 	nandc->regs->exec = cpu_to_le32(1);
 
-	if (!nandc->props->qpic_version2) {
+	if (!nandc->props->has_onfi_read_op) {
 		nandc->regs->orig_cmd1 = cpu_to_le32(nandc->cmd1);
 		nandc->regs->orig_vld = cpu_to_le32(nandc->vld);
 	}
@@ -1925,7 +1925,7 @@ static int qcom_param_page_type_exec(struct nand_chip *chip,  const struct nand_
 	else
 		nandc_set_read_loc_first(chip, reg_base, 0, len, 1);
 
-	if (!nandc->props->qpic_version2) {
+	if (!nandc->props->has_onfi_read_op) {
 		qcom_write_reg_dma(nandc, &nandc->regs->vld, NAND_DEV_CMD_VLD, 1, 0);
 		qcom_write_reg_dma(nandc, &nandc->regs->cmd1, NAND_DEV_CMD1, 1, NAND_BAM_NEXT_SGL);
 	}
@@ -1939,7 +1939,7 @@ static int qcom_param_page_type_exec(struct nand_chip *chip,  const struct nand_
 			   nandc->buf_count, 0);
 
 	/* restore CMD1 and VLD regs */
-	if (!nandc->props->qpic_version2) {
+	if (!nandc->props->has_onfi_read_op) {
 		qcom_write_reg_dma(nandc, &nandc->regs->orig_cmd1, NAND_DEV_CMD1_RESTORE, 1, 0);
 		qcom_write_reg_dma(nandc, &nandc->regs->orig_vld, NAND_DEV_CMD_VLD_RESTORE, 1,
 				   NAND_BAM_NEXT_SGL);
@@ -2041,7 +2041,7 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc)
 	if (!nandc->props->nandc_part_of_qpic)
 		nandc_write(nandc, SFLASHC_BURST_CFG, 0);
 
-	if (!nandc->props->qpic_version2)
+	if (!nandc->props->has_onfi_read_op)
 		nandc_write(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD_VLD),
 			    NAND_DEV_CMD_VLD_VAL);
 
@@ -2063,7 +2063,7 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc)
 	}
 
 	/* save the original values of these registers */
-	if (!nandc->props->qpic_version2) {
+	if (!nandc->props->has_onfi_read_op) {
 		nandc->cmd1 = nandc_read(nandc, dev_cmd_reg_addr(nandc, NAND_DEV_CMD1));
 		nandc->vld = NAND_DEV_CMD_VLD_VAL;
 	}
@@ -2280,7 +2280,7 @@ static int qcom_nandc_probe(struct platform_device *pdev)
 	if (IS_ERR(nandc->core_clk))
 		return PTR_ERR(nandc->core_clk);
 
-	nandc->aon_clk = devm_clk_get(dev, "aon");
+	nandc->aon_clk = devm_clk_get_optional(dev, "aon");
 	if (IS_ERR(nandc->aon_clk))
 		return PTR_ERR(nandc->aon_clk);
 
@@ -2381,10 +2381,20 @@ static const struct qcom_nandc_props ipq8074_nandc_props = {
 	.bam_offset = 0x30000,
 };
 
+static const struct qcom_nandc_props mdm9607_nandc_props = {
+	.ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT),
+	.supports_bam = true,
+	.nandc_part_of_qpic = true,
+	.has_onfi_read_op = true,
+	.dev_cmd_reg_start = 0x7000,
+	.bam_offset = 0x30000,
+};
+
 static const struct qcom_nandc_props sdx55_nandc_props = {
 	.ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT),
 	.supports_bam = true,
 	.nandc_part_of_qpic = true,
+	.has_onfi_read_op = true,
 	.qpic_version2 = true,
 	.dev_cmd_reg_start = 0x7000,
 	.bam_offset = 0x30000,
@@ -2412,6 +2422,10 @@ static const struct of_device_id qcom_nandc_of_match[] = {
 		.data = &ipq8074_nandc_props,
 	},
 	{
+		.compatible = "qcom,mdm9607-nand",
+		.data = &mdm9607_nandc_props,
+	},
+	{
 		.compatible = "qcom,sdx55-nand",
 		.data = &sdx55_nandc_props,
 	},
diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index 02647565c8ba..45ccbce91551 100644
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -79,6 +79,12 @@
 #define NFC_REG_H6_MDMA_BUF_ADDR 0x0210
 #define NFC_REG_H6_MDMA_CNT	0x0214
 
+#define NFC_H6_MDMA_STA_DESC0_COMPLETE	BIT(0)
+
+#define NFC_MDMA_DESC_LAST	BIT(2)
+#define NFC_MDMA_DESC_FIRST	BIT(3)
+#define NFC_MDMA_DESC_SIZE_MASK	GENMASK(15, 0)
+
 #define NFC_RAM0_BASE		0x0400
 #define NFC_RAM1_BASE		0x0800
 
@@ -237,6 +243,18 @@ struct sunxi_nand_hw_ecc {
 	u32 ecc_ctl;
 };
 
+#define SUNXI_NFC_TIMING_STEPS	4
+
+/* Delay arrays contain internal NDFC clock cycles for field values 0 to 3. */
+struct sunxi_nfc_timings {
+	/* Internal clock cycles used by T1-T4, T7 and T11. */
+	u8 setup_cycles;
+	s32 tWB[SUNXI_NFC_TIMING_STEPS];
+	s32 tADL[SUNXI_NFC_TIMING_STEPS];
+	s32 tWHR[SUNXI_NFC_TIMING_STEPS];
+	s32 tRHW[SUNXI_NFC_TIMING_STEPS];
+};
+
 /**
  * struct sunxi_nand_chip - stores NAND chip device related information
  *
@@ -267,12 +285,19 @@ static inline struct sunxi_nand_chip *to_sunxi_nand(struct nand_chip *nand)
 	return container_of(nand, struct sunxi_nand_chip, nand);
 }
 
+struct sunxi_nfc_mdma_desc {
+	__le32 config;
+	__le32 size;
+	__le32 buf;
+	__le32 next;
+} __packed __aligned(4);
+
 /*
  * NAND Controller capabilities structure: stores NAND controller capabilities
  * for distinction between compatible strings.
  *
- * @has_mdma:		Use mbus dma mode, otherwise general dma
- *			through MBUS on A23/A33 needs extra configuration.
+ * @has_mdma:		Use A23/A33-style MBUS DMA registers
+ * @has_mdma_desc:	MBUS DMA uses H6-style descriptors
  * @has_ecc_block_512:	If the ECC can handle 512B or only 1024B chunks
  * @has_ecc_clk:	If the controller needs an ECC clock.
  * @has_mbus_clk:	If the controller needs a mbus clock.
@@ -301,9 +326,11 @@ static inline struct sunxi_nand_chip *to_sunxi_nand(struct nand_chip *nand)
  *			bytes to write
  * @nuser_data_tab:	Size of @user_data_len_tab
  * @sram_size:		Size of the NAND controller SRAM
+ * @timings:		Controller timing characteristics
  */
 struct sunxi_nfc_caps {
 	bool has_mdma;
+	bool has_mdma_desc;
 	bool has_ecc_block_512;
 	bool has_ecc_clk;
 	bool has_mbus_clk;
@@ -327,6 +354,7 @@ struct sunxi_nfc_caps {
 	unsigned int nuser_data_tab;
 	unsigned int max_ecc_steps;
 	int sram_size;
+	const struct sunxi_nfc_timings *timings;
 };
 
 /**
@@ -346,6 +374,9 @@ struct sunxi_nfc_caps {
  *	   controller
  * @complete: a completion object used to wait for NAND controller events
  * @dmac: the DMA channel attached to the NAND controller
+ * @use_mdma: use an internal MBUS DMA backend
+ * @mdma_desc: H6-style MBUS DMA descriptor
+ * @mdma_desc_dma: DMA address of @mdma_desc
  * @caps: NAND Controller capabilities
  */
 struct sunxi_nfc {
@@ -362,6 +393,9 @@ struct sunxi_nfc {
 	struct list_head chips;
 	struct completion complete;
 	struct dma_chan *dmac;
+	bool use_mdma;
+	struct sunxi_nfc_mdma_desc *mdma_desc;
+	dma_addr_t mdma_desc_dma;
 	const struct sunxi_nfc_caps *caps;
 };
 
@@ -466,7 +500,10 @@ static int sunxi_nfc_dma_op_prepare(struct sunxi_nfc *nfc, const void *buf,
 {
 	struct dma_async_tx_descriptor *dmad;
 	enum dma_transfer_direction tdir;
+	dma_addr_t buf_dma;
 	dma_cookie_t dmat;
+	int len = chunksize * nchunks;
+	u32 data_blocks = nchunks;
 	int ret;
 
 	if (ddir == DMA_FROM_DEVICE)
@@ -474,12 +511,21 @@ static int sunxi_nfc_dma_op_prepare(struct sunxi_nfc *nfc, const void *buf,
 	else
 		tdir = DMA_MEM_TO_DEV;
 
-	sg_init_one(sg, buf, nchunks * chunksize);
+	sg_init_one(sg, buf, len);
 	ret = dma_map_sg(nfc->dev, sg, 1, ddir);
 	if (!ret)
 		return -ENOMEM;
 
-	if (!nfc->caps->has_mdma) {
+	buf_dma = sg_dma_address(sg);
+
+	if (nfc->mdma_desc &&
+	    (len > NFC_MDMA_DESC_SIZE_MASK || !IS_ALIGNED(len, 8) ||
+	     !IS_ALIGNED(buf_dma, 4))) {
+		ret = -EINVAL;
+		goto err_unmap_buf;
+	}
+
+	if (!nfc->use_mdma) {
 		dmad = dmaengine_prep_slave_sg(nfc->dmac, sg, 1, tdir, DMA_CTRL_ACK);
 		if (!dmad) {
 			ret = -EINVAL;
@@ -489,14 +535,35 @@ static int sunxi_nfc_dma_op_prepare(struct sunxi_nfc *nfc, const void *buf,
 
 	writel(readl(nfc->regs + NFC_REG_CTL) | NFC_RAM_METHOD,
 	       nfc->regs + NFC_REG_CTL);
-	writel(nchunks, nfc->regs + NFC_REG_SECTOR_NUM);
+
+	/* H6/H616 use one enable bit per ECC data block. */
+	if (nfc->caps->has_mdma_desc)
+		data_blocks = GENMASK(nchunks - 1, 0);
+	writel(data_blocks, nfc->regs + NFC_REG_SECTOR_NUM);
 	writel(chunksize, nfc->regs + NFC_REG_CNT);
 
-	if (nfc->caps->has_mdma) {
+	if (nfc->use_mdma)
 		writel(readl(nfc->regs + NFC_REG_CTL) & ~NFC_DMA_TYPE_NORMAL,
 		       nfc->regs + NFC_REG_CTL);
-		writel(chunksize * nchunks, nfc->regs + NFC_REG_MDMA_CNT);
-		writel(sg_dma_address(sg), nfc->regs + NFC_REG_MDMA_ADDR);
+
+	if (nfc->mdma_desc) {
+		struct sunxi_nfc_mdma_desc *desc = nfc->mdma_desc;
+
+		desc->config = cpu_to_le32(NFC_MDMA_DESC_FIRST |
+					   NFC_MDMA_DESC_LAST);
+		desc->size = cpu_to_le32(len);
+		/* Descriptor words are little-endian DMA memory, not MMIO. */
+		desc->buf = cpu_to_le32(buf_dma);
+		desc->next = cpu_to_le32(nfc->mdma_desc_dma);
+
+		writel(NFC_H6_MDMA_STA_DESC0_COMPLETE,
+		       nfc->regs + NFC_REG_H6_MDMA_STA);
+		dma_wmb();
+		writel(nfc->mdma_desc_dma,
+		       nfc->regs + NFC_REG_H6_MDMA_DLBA_REG);
+	} else if (nfc->caps->has_mdma) {
+		writel(len, nfc->regs + NFC_REG_MDMA_CNT);
+		writel(buf_dma, nfc->regs + NFC_REG_MDMA_ADDR);
 	} else {
 		dmat = dmaengine_submit(dmad);
 
@@ -525,6 +592,14 @@ static void sunxi_nfc_dma_op_cleanup(struct sunxi_nfc *nfc,
 	       nfc->regs + NFC_REG_CTL);
 }
 
+static void sunxi_nfc_dma_op_abort(struct sunxi_nfc *nfc)
+{
+	if (nfc->use_mdma)
+		sunxi_nfc_rst(nfc);
+	else
+		dmaengine_terminate_all(nfc->dmac);
+}
+
 static void sunxi_nfc_select_chip(struct nand_chip *nand, unsigned int cs)
 {
 	struct mtd_info *mtd = nand_to_mtd(nand);
@@ -1202,7 +1277,7 @@ static int sunxi_nfc_hw_ecc_read_chunks_dma(struct nand_chip *nand, uint8_t *buf
 
 	wait = NFC_CMD_INT_FLAG;
 
-	if (nfc->caps->has_mdma)
+	if (nfc->use_mdma)
 		wait |= NFC_DMA_INT_FLAG;
 	else
 		dma_async_issue_pending(nfc->dmac);
@@ -1211,8 +1286,8 @@ static int sunxi_nfc_hw_ecc_read_chunks_dma(struct nand_chip *nand, uint8_t *buf
 	       nfc->regs + NFC_REG_CMD);
 
 	ret = sunxi_nfc_wait_events(nfc, wait, false, 0);
-	if (ret && !nfc->caps->has_mdma)
-		dmaengine_terminate_all(nfc->dmac);
+	if (ret)
+		sunxi_nfc_dma_op_abort(nfc);
 
 	sunxi_nfc_randomizer_disable(nand);
 	sunxi_nfc_hw_ecc_disable(nand);
@@ -1613,7 +1688,7 @@ static int sunxi_nfc_hw_ecc_write_page_dma(struct nand_chip *nand,
 
 	wait = NFC_CMD_INT_FLAG;
 
-	if (nfc->caps->has_mdma)
+	if (nfc->use_mdma)
 		wait |= NFC_DMA_INT_FLAG;
 	else
 		dma_async_issue_pending(nfc->dmac);
@@ -1623,8 +1698,8 @@ static int sunxi_nfc_hw_ecc_write_page_dma(struct nand_chip *nand,
 	       nfc->regs + NFC_REG_CMD);
 
 	ret = sunxi_nfc_wait_events(nfc, wait, false, 0);
-	if (ret && !nfc->caps->has_mdma)
-		dmaengine_terminate_all(nfc->dmac);
+	if (ret)
+		sunxi_nfc_dma_op_abort(nfc);
 
 	sunxi_nfc_randomizer_disable(nand);
 	sunxi_nfc_hw_ecc_disable(nand);
@@ -1667,8 +1742,21 @@ static int sunxi_nfc_hw_ecc_write_oob(struct nand_chip *nand, int page)
 	return nand_prog_page_end_op(nand);
 }
 
-static const s32 tWB_lut[] = {6, 12, 16, 20};
-static const s32 tRHW_lut[] = {4, 8, 12, 20};
+static const struct sunxi_nfc_timings sun4i_a10_nfc_timings = {
+	.setup_cycles = 1,
+	.tWB = { 6, 12, 16, 20 },
+	.tADL = { 7, 15, 23, 31 },
+	.tWHR = { 7, 15, 23, 31 },
+	.tRHW = { 4, 8, 12, 20 },
+};
+
+static const struct sunxi_nfc_timings sun50i_h616_nfc_timings = {
+	.setup_cycles = 2,
+	.tWB = { 28, 44, 60, 76 },
+	.tADL = { 0, 12, 28, 44 },
+	.tWHR = { 0, 12, 28, 44 },
+	.tRHW = { 8, 24, 40, 56 },
+};
 
 static int _sunxi_nand_lookup_timing(const s32 *lut, int lut_size, u32 duration,
 		u32 clk_period)
@@ -1693,6 +1781,7 @@ static int sunxi_nfc_setup_interface(struct nand_chip *nand, int csline,
 {
 	struct sunxi_nand_chip *sunxi_nand = to_sunxi_nand(nand);
 	struct sunxi_nfc *nfc = to_sunxi_nfc(sunxi_nand->nand.controller);
+	const struct sunxi_nfc_timings *nfc_timings = nfc->caps->timings;
 	const struct nand_sdr_timings *timings;
 	u32 min_clk_period = 0;
 	s32 tWB, tADL, tWHR, tRHW, tCAD;
@@ -1703,20 +1792,28 @@ static int sunxi_nfc_setup_interface(struct nand_chip *nand, int csline,
 		return -ENOTSUPP;
 
 	/* T1 <=> tCLS */
-	if (timings->tCLS_min > min_clk_period)
-		min_clk_period = timings->tCLS_min;
+	if (timings->tCLS_min >
+	    min_clk_period * nfc_timings->setup_cycles)
+		min_clk_period = DIV_ROUND_UP(timings->tCLS_min,
+					      nfc_timings->setup_cycles);
 
 	/* T2 <=> tCLH */
-	if (timings->tCLH_min > min_clk_period)
-		min_clk_period = timings->tCLH_min;
+	if (timings->tCLH_min >
+	    min_clk_period * nfc_timings->setup_cycles)
+		min_clk_period = DIV_ROUND_UP(timings->tCLH_min,
+					      nfc_timings->setup_cycles);
 
 	/* T3 <=> tCS */
-	if (timings->tCS_min > min_clk_period)
-		min_clk_period = timings->tCS_min;
+	if (timings->tCS_min >
+	    min_clk_period * nfc_timings->setup_cycles)
+		min_clk_period = DIV_ROUND_UP(timings->tCS_min,
+					      nfc_timings->setup_cycles);
 
 	/* T4 <=> tCH */
-	if (timings->tCH_min > min_clk_period)
-		min_clk_period = timings->tCH_min;
+	if (timings->tCH_min >
+	    min_clk_period * nfc_timings->setup_cycles)
+		min_clk_period = DIV_ROUND_UP(timings->tCH_min,
+					      nfc_timings->setup_cycles);
 
 	/* T5 <=> tWP */
 	if (timings->tWP_min > min_clk_period)
@@ -1727,8 +1824,10 @@ static int sunxi_nfc_setup_interface(struct nand_chip *nand, int csline,
 		min_clk_period = timings->tWH_min;
 
 	/* T7 <=> tALS */
-	if (timings->tALS_min > min_clk_period)
-		min_clk_period = timings->tALS_min;
+	if (timings->tALS_min >
+	    min_clk_period * nfc_timings->setup_cycles)
+		min_clk_period = DIV_ROUND_UP(timings->tALS_min,
+					      nfc_timings->setup_cycles);
 
 	/* T8 <=> tDS */
 	if (timings->tDS_min > min_clk_period)
@@ -1743,8 +1842,10 @@ static int sunxi_nfc_setup_interface(struct nand_chip *nand, int csline,
 		min_clk_period = DIV_ROUND_UP(timings->tRR_min, 3);
 
 	/* T11 <=> tALH */
-	if (timings->tALH_min > min_clk_period)
-		min_clk_period = timings->tALH_min;
+	if (timings->tALH_min >
+	    min_clk_period * nfc_timings->setup_cycles)
+		min_clk_period = DIV_ROUND_UP(timings->tALH_min,
+					      nfc_timings->setup_cycles);
 
 	/* T12 <=> tRP */
 	if (timings->tRP_min > min_clk_period)
@@ -1763,17 +1864,25 @@ static int sunxi_nfc_setup_interface(struct nand_chip *nand, int csline,
 		min_clk_period = DIV_ROUND_UP(timings->tWC_min, 2);
 
 	/* T16 - T19 + tCAD */
-	if (timings->tWB_max > (min_clk_period * 20))
-		min_clk_period = DIV_ROUND_UP(timings->tWB_max, 20);
-
-	if (timings->tADL_min > (min_clk_period * 32))
-		min_clk_period = DIV_ROUND_UP(timings->tADL_min, 32);
-
-	if (timings->tWHR_min > (min_clk_period * 32))
-		min_clk_period = DIV_ROUND_UP(timings->tWHR_min, 32);
-
-	if (timings->tRHW_min > (min_clk_period * 20))
-		min_clk_period = DIV_ROUND_UP(timings->tRHW_min, 20);
+	if (timings->tWB_max >
+	    (min_clk_period * nfc_timings->tWB[SUNXI_NFC_TIMING_STEPS - 1]))
+		min_clk_period = DIV_ROUND_UP(timings->tWB_max,
+					      nfc_timings->tWB[SUNXI_NFC_TIMING_STEPS - 1]);
+
+	if (timings->tADL_min >
+	    (min_clk_period * nfc_timings->tADL[SUNXI_NFC_TIMING_STEPS - 1]))
+		min_clk_period = DIV_ROUND_UP(timings->tADL_min,
+					      nfc_timings->tADL[SUNXI_NFC_TIMING_STEPS - 1]);
+
+	if (timings->tWHR_min >
+	    (min_clk_period * nfc_timings->tWHR[SUNXI_NFC_TIMING_STEPS - 1]))
+		min_clk_period = DIV_ROUND_UP(timings->tWHR_min,
+					      nfc_timings->tWHR[SUNXI_NFC_TIMING_STEPS - 1]);
+
+	if (timings->tRHW_min >
+	    (min_clk_period * nfc_timings->tRHW[SUNXI_NFC_TIMING_STEPS - 1]))
+		min_clk_period = DIV_ROUND_UP(timings->tRHW_min,
+					      nfc_timings->tRHW[SUNXI_NFC_TIMING_STEPS - 1]);
 
 	/*
 	 * In non-EDO, tREA should be less than tRP to guarantee that the
@@ -1789,26 +1898,28 @@ static int sunxi_nfc_setup_interface(struct nand_chip *nand, int csline,
 	if (timings->tREA_max > min_clk_period && !timings->tRLOH_min)
 		min_clk_period = timings->tREA_max;
 
-	tWB  = sunxi_nand_lookup_timing(tWB_lut, timings->tWB_max,
+	tWB  = sunxi_nand_lookup_timing(nfc_timings->tWB, timings->tWB_max,
 					min_clk_period);
 	if (tWB < 0) {
 		dev_err(nfc->dev, "unsupported tWB\n");
 		return tWB;
 	}
 
-	tADL = DIV_ROUND_UP(timings->tADL_min, min_clk_period) >> 3;
-	if (tADL > 3) {
+	tADL = sunxi_nand_lookup_timing(nfc_timings->tADL,
+					timings->tADL_min, min_clk_period);
+	if (tADL < 0) {
 		dev_err(nfc->dev, "unsupported tADL\n");
-		return -EINVAL;
+		return tADL;
 	}
 
-	tWHR = DIV_ROUND_UP(timings->tWHR_min, min_clk_period) >> 3;
-	if (tWHR > 3) {
+	tWHR = sunxi_nand_lookup_timing(nfc_timings->tWHR,
+					timings->tWHR_min, min_clk_period);
+	if (tWHR < 0) {
 		dev_err(nfc->dev, "unsupported tWHR\n");
-		return -EINVAL;
+		return tWHR;
 	}
 
-	tRHW = sunxi_nand_lookup_timing(tRHW_lut, timings->tRHW_min,
+	tRHW = sunxi_nand_lookup_timing(nfc_timings->tRHW, timings->tRHW_min,
 					min_clk_period);
 	if (tRHW < 0) {
 		dev_err(nfc->dev, "unsupported tRHW\n");
@@ -2073,11 +2184,13 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct nand_chip *nand,
 	ecc->write_oob = sunxi_nfc_hw_ecc_write_oob;
 	mtd_set_ooblayout(mtd, &sunxi_nand_ooblayout_ops);
 
-	if (nfc->dmac || nfc->caps->has_mdma) {
+	if (nfc->dmac || nfc->use_mdma) {
 		ecc->read_page = sunxi_nfc_hw_ecc_read_page_dma;
 		ecc->read_subpage = sunxi_nfc_hw_ecc_read_subpage_dma;
 		ecc->write_page = sunxi_nfc_hw_ecc_write_page_dma;
 		nand->options |= NAND_USES_DMA;
+		if (nfc->mdma_desc)
+			nand->buf_align = 4;
 	} else {
 		ecc->read_page = sunxi_nfc_hw_ecc_read_page;
 		ecc->read_subpage = sunxi_nfc_hw_ecc_read_subpage;
@@ -2426,8 +2539,32 @@ static int sunxi_nfc_dma_init(struct sunxi_nfc *nfc, struct resource *r)
 {
 	int ret;
 
-	if (nfc->caps->has_mdma)
+	if (nfc->caps->has_mdma_desc) {
+		ret = dma_set_mask_and_coherent(nfc->dev, DMA_BIT_MASK(32));
+		if (ret) {
+			dev_warn(nfc->dev,
+				 "failed to set MBUS DMA mask, using PIO: %d\n",
+				 ret);
+			return 0;
+		}
+
+		nfc->mdma_desc =
+			dmam_alloc_coherent(nfc->dev, sizeof(*nfc->mdma_desc),
+					    &nfc->mdma_desc_dma, GFP_KERNEL);
+		if (!nfc->mdma_desc) {
+			dev_warn(nfc->dev,
+				 "failed to allocate MBUS DMA descriptor, using PIO\n");
+			return 0;
+		}
+
+		nfc->use_mdma = true;
 		return 0;
+	}
+
+	if (nfc->caps->has_mdma) {
+		nfc->use_mdma = true;
+		return 0;
+	}
 
 	nfc->dmac = dma_request_chan(nfc->dev, "rxtx");
 	if (IS_ERR(nfc->dmac)) {
@@ -2595,6 +2732,7 @@ static const struct sunxi_nfc_caps sunxi_nfc_a10_caps = {
 	.nstrengths = ARRAY_SIZE(sunxi_ecc_strengths_a10),
 	.max_ecc_steps = 16,
 	.sram_size = 1024,
+	.timings = &sun4i_a10_nfc_timings,
 };
 
 static const struct sunxi_nfc_caps sunxi_nfc_a23_caps = {
@@ -2617,9 +2755,11 @@ static const struct sunxi_nfc_caps sunxi_nfc_a23_caps = {
 	.nstrengths = ARRAY_SIZE(sunxi_ecc_strengths_a10),
 	.max_ecc_steps = 16,
 	.sram_size = 1024,
+	.timings = &sun4i_a10_nfc_timings,
 };
 
 static const struct sunxi_nfc_caps sunxi_nfc_h616_caps = {
+	.has_mdma_desc = true,
 	.has_ecc_clk = true,
 	.has_mbus_clk = true,
 	.reg_io_data = NFC_REG_A23_IO_DATA,
@@ -2641,6 +2781,7 @@ static const struct sunxi_nfc_caps sunxi_nfc_h616_caps = {
 	.nuser_data_tab = ARRAY_SIZE(sunxi_user_data_len_h6),
 	.max_ecc_steps = 32,
 	.sram_size = 8192,
+	.timings = &sun50i_h616_nfc_timings,
 };
 
 static const struct of_device_id sunxi_nfc_ids[] = {
diff --git a/drivers/mtd/nand/spi/Makefile b/drivers/mtd/nand/spi/Makefile
index a47bd22cd309..b5ccb44860df 100644
--- a/drivers/mtd/nand/spi/Makefile
+++ b/drivers/mtd/nand/spi/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 spinand-objs := core.o otp.o
-spinand-objs += alliancememory.o ato.o dosilicon.o esmt.o fmsh.o foresee.o gigadevice.o
+spinand-objs += alliancememory.o ato.o dosilicon.o esmt.o fmsh.o foresee.o gigadevice.o heyangtek.o
 spinand-objs += macronix.o micron.o paragon.o skyhigh.o toshiba.o winbond.o xtx.o
 obj-$(CONFIG_MTD_SPI_NAND) += spinand.o
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index f86786344d52..35365b67dd8e 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -1359,6 +1359,7 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = {
 	&fmsh_spinand_manufacturer,
 	&foresee_spinand_manufacturer,
 	&gigadevice_spinand_manufacturer,
+	&heyangtek_spinand_manufacturer,
 	&macronix_spinand_manufacturer,
 	&micron_spinand_manufacturer,
 	&paragon_spinand_manufacturer,
diff --git a/drivers/mtd/nand/spi/fmsh.c b/drivers/mtd/nand/spi/fmsh.c
index f417955f7d1c..6352e9c9e502 100644
--- a/drivers/mtd/nand/spi/fmsh.c
+++ b/drivers/mtd/nand/spi/fmsh.c
@@ -9,6 +9,16 @@
 #include <linux/kernel.h>
 #include <linux/mtd/spinand.h>
 
+#define FM25G01B_STATUS_ECC_MASK		(7 << 4)
+	#define FM25G01B_STATUS_ECC_NO_BITFLIPS		(0 << 4)
+	#define FM25G01B_STATUS_ECC_1_3_BITFLIPS	(1 << 4)
+	#define FM25G01B_STATUS_ECC_4_BITFLIPS		(2 << 4)
+	#define FM25G01B_STATUS_ECC_5_BITFLIPS		(3 << 4)
+	#define FM25G01B_STATUS_ECC_6_BITFLIPS		(4 << 4)
+	#define FM25G01B_STATUS_ECC_7_BITFLIPS		(5 << 4)
+	#define FM25G01B_STATUS_ECC_8_BITFLIPS		(6 << 4)
+	#define FM25G01B_STATUS_ECC_UNCOR_ERROR		(7 << 4)
+
 #define FM25S01BI3_STATUS_ECC_MASK		(7 << 4)
 	#define FM25S01BI3_STATUS_ECC_NO_BITFLIPS	(0 << 4)
 	#define FM25S01BI3_STATUS_ECC_1_3_BITFLIPS	(1 << 4)
@@ -34,6 +44,74 @@ static SPINAND_OP_VARIANTS(update_cache_variants,
 		SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
 		SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
 
+static SPINAND_OP_VARIANTS(fm25g_read_cache_variants,
+		SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));
+
+static int fm25g01b_ooblayout_ecc(struct mtd_info *mtd, int section,
+				  struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	region->offset = 64;
+	region->length = 64;
+
+	return 0;
+}
+
+static int fm25g01b_ooblayout_free(struct mtd_info *mtd, int section,
+				   struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	/* reserve 2 bytes for the BBM */
+	region->offset = 2;
+	region->length = 62;
+
+	return 0;
+}
+
+static int fm25g01b_ecc_get_status(struct spinand_device *spinand,
+				   u8 status)
+{
+	switch (status & FM25G01B_STATUS_ECC_MASK) {
+	case FM25G01B_STATUS_ECC_NO_BITFLIPS:
+		return 0;
+
+	case FM25G01B_STATUS_ECC_1_3_BITFLIPS:
+		return 3;
+
+	case FM25G01B_STATUS_ECC_4_BITFLIPS:
+		return 4;
+
+	case FM25G01B_STATUS_ECC_5_BITFLIPS:
+		return 5;
+
+	case FM25G01B_STATUS_ECC_6_BITFLIPS:
+		return 6;
+
+	case FM25G01B_STATUS_ECC_7_BITFLIPS:
+		return 7;
+
+	case FM25G01B_STATUS_ECC_8_BITFLIPS:
+		return 8;
+
+	case FM25G01B_STATUS_ECC_UNCOR_ERROR:
+		return -EBADMSG;
+
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
 static int fm25s01a_ooblayout_ecc(struct mtd_info *mtd, int section,
 				  struct mtd_oob_region *region)
 {
@@ -102,6 +180,11 @@ static int fm25s01bi3_ooblayout_free(struct mtd_info *mtd, int section,
 	return 0;
 }
 
+static const struct mtd_ooblayout_ops fm25g01b_ooblayout = {
+	.ecc = fm25g01b_ooblayout_ecc,
+	.free = fm25g01b_ooblayout_free,
+};
+
 static const struct mtd_ooblayout_ops fm25s01a_ooblayout = {
 	.ecc = fm25s01a_ooblayout_ecc,
 	.free = fm25s01a_ooblayout_free,
@@ -113,6 +196,26 @@ static const struct mtd_ooblayout_ops fm25s01bi3_ooblayout = {
 };
 
 static const struct spinand_info fmsh_spinand_table[] = {
+	SPINAND_INFO("FM25G01B",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd1),
+		     NAND_MEMORG(1, 2048, 128, 64, 1024, 21, 1, 1, 1),
+		     NAND_ECCREQ(8, 528),
+		     SPINAND_INFO_OP_VARIANTS(&fm25g_read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_QE_BIT,
+		     SPINAND_ECCINFO(&fm25g01b_ooblayout,
+				     fm25g01b_ecc_get_status)),
+	SPINAND_INFO("FM25G02B",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xd2),
+		     NAND_MEMORG(1, 2048, 128, 64, 2048, 41, 1, 1, 1),
+		     NAND_ECCREQ(8, 528),
+		     SPINAND_INFO_OP_VARIANTS(&fm25g_read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_QE_BIT,
+		     SPINAND_ECCINFO(&fm25g01b_ooblayout,
+				     fm25g01b_ecc_get_status)),
 	SPINAND_INFO("FM25S01A",
 		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xE4),
 		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
diff --git a/drivers/mtd/nand/spi/heyangtek.c b/drivers/mtd/nand/spi/heyangtek.c
new file mode 100644
index 000000000000..7fc50fd3de08
--- /dev/null
+++ b/drivers/mtd/nand/spi/heyangtek.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Authors:
+ *	Andrey Zolotarev <andrey.zolotarev@keenetic.com> - the main driver logic
+ *	Aleksei Sviridkin <f@lex.la> - adaptation to the mainline Linux kernel
+ *
+ * Based on:
+ *	https://github.com/keenetic/kernel-49/commit/bacade569fb12bc0ad31ba09bca9b890118fbca7
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/mtd/spinand.h>
+
+#define SPINAND_MFR_HEYANGTEK			0xc9
+
+#define HYF1GQ4_STATUS_ECC_LIMIT_BITFLIPS	(3 << 4)
+
+static SPINAND_OP_VARIANTS(read_cache_variants,
+		SPINAND_PAGE_READ_FROM_CACHE_1S_4S_4S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_2S_2S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));
+
+static SPINAND_OP_VARIANTS(write_cache_variants,
+		SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0),
+		SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0));
+
+static SPINAND_OP_VARIANTS(update_cache_variants,
+		SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
+		SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
+
+/*
+ * HYF1GQ4UDACAE is a GD5F1GQ4-compatible die, so the OOB layout is taken
+ * from gd5fxgq4xa: the on-die ECC parity occupies bytes 8..15 of each
+ * 16-byte section, the bad block marker sits in byte 0 and the remaining
+ * bytes are exposed as free.
+ */
+static int hyf1gq4_ooblayout_ecc(struct mtd_info *mtd, int section,
+				 struct mtd_oob_region *region)
+{
+	if (section > 3)
+		return -ERANGE;
+
+	region->offset = (16 * section) + 8;
+	region->length = 8;
+
+	return 0;
+}
+
+static int hyf1gq4_ooblayout_free(struct mtd_info *mtd, int section,
+				  struct mtd_oob_region *region)
+{
+	if (section > 3)
+		return -ERANGE;
+
+	if (section) {
+		region->offset = 16 * section;
+		region->length = 8;
+	} else {
+		/* section 0 has one byte reserved for the bad block marker */
+		region->offset = 1;
+		region->length = 7;
+	}
+
+	return 0;
+}
+
+static const struct mtd_ooblayout_ops hyf1gq4_ooblayout = {
+	.ecc = hyf1gq4_ooblayout_ecc,
+	.free = hyf1gq4_ooblayout_free,
+};
+
+static int hyf1gq4_ecc_get_status(struct spinand_device *spinand, u8 status)
+{
+	struct nand_device *nand = spinand_to_nand(spinand);
+
+	switch (status & STATUS_ECC_MASK) {
+	case STATUS_ECC_NO_BITFLIPS:
+		return 0;
+
+	case STATUS_ECC_UNCOR_ERROR:
+		return -EBADMSG;
+
+	case STATUS_ECC_HAS_BITFLIPS:
+		/*
+		 * The die exposes only a coarse 2-bit ECC status and has no
+		 * register for the exact bitflip count. This code means
+		 * "corrected, below the refresh threshold", so report half of
+		 * the ECC strength as a representative value.
+		 */
+		return nanddev_get_ecc_conf(nand)->strength / 2;
+
+	case HYF1GQ4_STATUS_ECC_LIMIT_BITFLIPS:
+		/*
+		 * "Corrected, refresh recommended": report the full ECC
+		 * strength so the upper layers relocate the data.
+		 */
+		return nanddev_get_ecc_conf(nand)->strength;
+
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static const struct spinand_info heyangtek_spinand_table[] = {
+	SPINAND_INFO("HYF1GQ4UDACAE",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x21),
+		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+		     NAND_ECCREQ(4, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_QE_BIT,
+		     SPINAND_ECCINFO(&hyf1gq4_ooblayout,
+				     hyf1gq4_ecc_get_status)),
+};
+
+static const struct spinand_manufacturer_ops heyangtek_spinand_manuf_ops = {
+};
+
+const struct spinand_manufacturer heyangtek_spinand_manufacturer = {
+	.id = SPINAND_MFR_HEYANGTEK,
+	.name = "HeYangTek",
+	.chips = heyangtek_spinand_table,
+	.nchips = ARRAY_SIZE(heyangtek_spinand_table),
+	.ops = &heyangtek_spinand_manuf_ops,
+};