[PATCH v2 1/9] spi: mtk-snfi: Add snfi support for MT7986 IC

From: Xiangsheng Hou
Date: Mon Dec 05 2022 - 01:58:50 EST


Add snfi support for MT7986 IC.

Signed-off-by: Xiangsheng Hou <xiangsheng.hou@xxxxxxxxxxxx>
---
drivers/spi/spi-mtk-snfi.c | 29 +++++++++++++++++++++++++++--
1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-mtk-snfi.c b/drivers/spi/spi-mtk-snfi.c
index d66bf9762557..fa8412ba20e2 100644
--- a/drivers/spi/spi-mtk-snfi.c
+++ b/drivers/spi/spi-mtk-snfi.c
@@ -126,7 +126,8 @@
#define STR_DATA BIT(0)

#define NFI_STA 0x060
-#define NFI_NAND_FSM GENMASK(28, 24)
+#define NFI_NAND_FSM_7622 GENMASK(28, 24)
+#define NFI_NAND_FSM_7986 GENMASK(29, 23)
#define NFI_FSM GENMASK(19, 16)
#define READ_EMPTY BIT(12)

@@ -158,6 +159,7 @@
#define MAS_WR GENMASK(5, 3)
#define MAS_RDDLY GENMASK(2, 0)
#define NFI_MASTERSTA_MASK_7622 (MAS_ADDR | MAS_RD | MAS_WR | MAS_RDDLY)
+#define NFI_MASTERSTA_MASK_7986 3

// SNFI registers
#define SNF_MAC_CTL 0x500
@@ -220,6 +222,11 @@

static const u8 mt7622_spare_sizes[] = { 16, 26, 27, 28 };

+static const u8 mt7986_spare_sizes[] = {
+ 16, 26, 27, 28, 32, 36, 40, 44, 48, 49, 50, 51, 52, 62, 61, 63, 64, 67,
+ 74
+};
+
struct mtk_snand_caps {
u16 sector_size;
u16 max_sectors;
@@ -230,6 +237,7 @@ struct mtk_snand_caps {
bool bbm_swap;
bool empty_page_check;
u32 mastersta_mask;
+ u32 nandfsm_mask;

const u8 *spare_sizes;
u32 num_spare_size;
@@ -244,6 +252,7 @@ static const struct mtk_snand_caps mt7622_snand_caps = {
.bbm_swap = false,
.empty_page_check = false,
.mastersta_mask = NFI_MASTERSTA_MASK_7622,
+ .nandfsm_mask = NFI_NAND_FSM_7622,
.spare_sizes = mt7622_spare_sizes,
.num_spare_size = ARRAY_SIZE(mt7622_spare_sizes)
};
@@ -257,10 +266,25 @@ static const struct mtk_snand_caps mt7629_snand_caps = {
.bbm_swap = true,
.empty_page_check = false,
.mastersta_mask = NFI_MASTERSTA_MASK_7622,
+ .nandfsm_mask = NFI_NAND_FSM_7622,
.spare_sizes = mt7622_spare_sizes,
.num_spare_size = ARRAY_SIZE(mt7622_spare_sizes)
};

+static const struct mtk_snand_caps mt7986_snand_caps = {
+ .sector_size = 1024,
+ .max_sectors = 8,
+ .fdm_size = 8,
+ .fdm_ecc_size = 1,
+ .fifo_size = 64,
+ .bbm_swap = true,
+ .empty_page_check = true,
+ .mastersta_mask = NFI_MASTERSTA_MASK_7986,
+ .nandfsm_mask = NFI_NAND_FSM_7986,
+ .spare_sizes = mt7986_spare_sizes,
+ .num_spare_size = ARRAY_SIZE(mt7986_spare_sizes)
+};
+
struct mtk_snand_conf {
size_t page_size;
size_t oob_size;
@@ -360,7 +384,7 @@ static int mtk_nfi_reset(struct mtk_snand *snf)
}

ret = readl_poll_timeout(snf->nfi_base + NFI_STA, val,
- !(val & (NFI_FSM | NFI_NAND_FSM)), 0,
+ !(val & (NFI_FSM | snf->caps->nandfsm_mask)), 0,
SNFI_POLL_INTERVAL);
if (ret) {
dev_err(snf->dev, "Failed to reset NFI\n");
@@ -1295,6 +1319,7 @@ static irqreturn_t mtk_snand_irq(int irq, void *id)
static const struct of_device_id mtk_snand_ids[] = {
{ .compatible = "mediatek,mt7622-snand", .data = &mt7622_snand_caps },
{ .compatible = "mediatek,mt7629-snand", .data = &mt7629_snand_caps },
+ { .compatible = "mediatek,mt7986-snand", .data = &mt7986_snand_caps },
{},
};

--
2.25.1