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mediatek: add Dosilicon DS35Q1GB-IB support

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Add the DS35Q1GB flash driver from the Rockchip kernel.

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://github.com/openwrt/openwrt/pull/24200
Signed-off-by: Jonas Jelonek <jonas@jonasjelonek.de>
This commit is contained in:
Chukun Pan authored and Jonas Jelonek committed 2026-09-27 10:32:13 +02:00
1 parent dff4a9d049
commit 4dd69c754f
1 file changed
+108
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target/linux/mediatek/patches-6.18/412-mtd-spinand-dosilicon-support-new-devices.patch
+108
View File
@@ -0,0 +1,108 @@
From 23f42ea9c4cb22c9e5efd233acb7aa4ee916ed07 Mon Sep 17 00:00:00 2001
From: Jon Lin <jon.lin@rock-chips.com>
Date: Tue, 12 Jul 2022 20:29:13 +0800
Subject: [PATCH] mtd: spinand: dosilicon: support new devices
Datasheet:
https://www.dosilicon.com/resources/SPI%20NAND/DS35X1GBXXX_rev06.pdf
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
---
drivers/mtd/nand/spi/dosilicon.c | 72 ++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
--- a/drivers/mtd/nand/spi/dosilicon.c
+++ b/drivers/mtd/nand/spi/dosilicon.c
@@ -9,6 +9,12 @@
#define SPINAND_MFR_DOSILICON 0xE5
+#define DOSICON_STATUS_ECC_MASK GENMASK(6, 4)
+#define DOSICON_STATUS_ECC_NO_BITFLIPS (0 << 4)
+#define DOSICON_STATUS_ECC_1TO3_BITFLIPS (1 << 4)
+#define DOSICON_STATUS_ECC_4TO6_BITFLIPS (3 << 4)
+#define DOSICON_STATUS_ECC_7TO8_BITFLIPS (5 << 4)
+
static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
@@ -58,6 +64,62 @@ static const struct mtd_ooblayout_ops ds
.free = ds35xx_ooblayout_free,
};
+static int ds35xxgb_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 ds35xxgb_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 const struct mtd_ooblayout_ops ds35xxgb_ooblayout = {
+ .ecc = ds35xxgb_ooblayout_ecc,
+ .free = ds35xxgb_ooblayout_free,
+};
+
+static int ds35xxgb_ecc_get_status(struct spinand_device *spinand,
+ u8 status)
+{
+ switch (status & DOSICON_STATUS_ECC_MASK) {
+ case STATUS_ECC_NO_BITFLIPS:
+ return 0;
+
+ case STATUS_ECC_UNCOR_ERROR:
+ return -EBADMSG;
+
+ case DOSICON_STATUS_ECC_1TO3_BITFLIPS:
+ return 3;
+
+ case DOSICON_STATUS_ECC_4TO6_BITFLIPS:
+ return 6;
+
+ case DOSICON_STATUS_ECC_7TO8_BITFLIPS:
+ return 8;
+
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
static const struct spinand_info dosilicon_spinand_table[] = {
SPINAND_INFO("DS35Q1GA",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x71),
@@ -68,6 +130,16 @@ static const struct spinand_info dosilic
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&ds35xx_ooblayout, NULL)),
+ SPINAND_INFO("DS35Q1GB",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF1),
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&ds35xxgb_ooblayout,
+ ds35xxgb_ecc_get_status)),
SPINAND_INFO("DS35M1GA",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x21),
NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),