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qualcommax: allow overriding ECC strength for qpic-snand

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Make the ECC strength in the qpic-snand driver configurable via device
tree to use the device-specific ECC strength value.

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/18543
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
INAGAKI Hiroshi 2025-02-14 18:19:58 +09:00 committed by Robert Marko
parent 70b5252265
commit fc3ff2af0c
1 changed files with 35 additions and 0 deletions
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target/linux/qualcommax/patches-6.6/0413-spi-spi-qpic-snand-add-user-config-support.patch Normal file
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@ -0,0 +1,35 @@
From 589b7e9600b1e50574ce91e4d6fc903ef81d957f Mon Sep 17 00:00:00 2001
From: INAGAKI Hiroshi <musashino.open@gmail.com>
Date: Fri, 14 Feb 2025 18:19:58 +0900
Subject: [PATCH] spi: spi-qpic-snand: add user_config support for ECC
Make the ECC strength in the qpic-snand driver configurable via device
tree to use the device-specific ECC strength value.
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
---
--- a/drivers/spi/spi-qpic-snand.c
+++ b/drivers/spi/spi-qpic-snand.c
@@ -274,8 +274,20 @@ static int qcom_spi_ecc_init_ctx_pipelin
nand->ecc.ctx.priv = ecc_cfg;
snandc->qspi->mtd = mtd;
- /* BCH8 or BCH4 */
- ecc_mode = mtd->oobsize > 64 ? 1 : 0;
+ /* BCH4 or BCH8 */
+ switch (nand->ecc.user_conf.strength) {
+ case 4:
+ ecc_mode = 0;
+ break;
+ case 8:
+ ecc_mode = 1;
+ break;
+ default:
+ ecc_mode = mtd->oobsize > 64 ? 1 : 0;
+ dev_warn(snandc->dev,
+ "invalid ECC strength detected, configured from mtd oobsize\n");
+ break;
+ }
ecc_cfg->ecc_bytes_hw = ecc_mode ? 13 : 7;
ecc_cfg->spare_bytes = ecc_mode ? 2 : 4;