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51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
From 396886e8644d5b601126b97e0b36c40c5fb5cecf Mon Sep 17 00:00:00 2001
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From: Ziyang Huang <hzyitc@outlook.com>
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Date: Sun, 8 Sep 2024 16:40:11 +0800
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Subject: [PATCH 1/2] spi: spi-qpic-snand: support BCH8
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Signed-off-by: hzy <hzyitc@outlook.com>
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---
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drivers/spi/spi-qpic-snand.c | 12 ++++++++----
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1 file changed, 8 insertions(+), 4 deletions(-)
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--- a/drivers/spi/spi-qpic-snand.c
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+++ b/drivers/spi/spi-qpic-snand.c
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@@ -252,6 +252,7 @@ static int qcom_spi_ecc_init_ctx_pipelin
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struct nand_ecc_props *conf = &nand->ecc.ctx.conf;
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struct mtd_info *mtd = nanddev_to_mtd(nand);
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int cwperpage, bad_block_byte;
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+ int ecc_mode;
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struct qpic_ecc *ecc_cfg;
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cwperpage = mtd->writesize / NANDC_STEP_SIZE;
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@@ -270,14 +271,17 @@ static int qcom_spi_ecc_init_ctx_pipelin
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nand->ecc.ctx.priv = ecc_cfg;
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snandc->qspi->mtd = mtd;
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- ecc_cfg->ecc_bytes_hw = 7;
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- ecc_cfg->spare_bytes = 4;
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+ /* BCH8 or BCH4 */
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+ ecc_mode = mtd->oobsize > 64 ? 1 : 0;
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+
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+ ecc_cfg->ecc_bytes_hw = ecc_mode ? 13 : 7;
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+ ecc_cfg->spare_bytes = ecc_mode ? 2 : 4;
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ecc_cfg->bbm_size = 1;
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ecc_cfg->bch_enabled = true;
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ecc_cfg->bytes = ecc_cfg->ecc_bytes_hw + ecc_cfg->spare_bytes + ecc_cfg->bbm_size;
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ecc_cfg->steps = 4;
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- ecc_cfg->strength = 4;
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+ ecc_cfg->strength = ecc_mode ? 8 : 4;
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ecc_cfg->step_size = 512;
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ecc_cfg->cw_data = 516;
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ecc_cfg->cw_size = ecc_cfg->cw_data + ecc_cfg->bytes;
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@@ -319,7 +323,7 @@ static int qcom_spi_ecc_init_ctx_pipelin
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FIELD_PREP(ECC_SW_RESET, 0) |
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FIELD_PREP(ECC_NUM_DATA_BYTES_MASK, ecc_cfg->cw_data) |
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FIELD_PREP(ECC_FORCE_CLK_OPEN, 1) |
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- FIELD_PREP(ECC_MODE_MASK, 0) |
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+ FIELD_PREP(ECC_MODE_MASK, ecc_mode) |
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FIELD_PREP(ECC_PARITY_SIZE_BYTES_BCH_MASK, ecc_cfg->ecc_bytes_hw);
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ecc_cfg->ecc_buf_cfg = 0x203 << NUM_STEPS;
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