diff options
| -rw-r--r-- | target/linux/mediatek/patches-5.10/360-mtd-rawnand-mtk-Fix-WAITRDY-break-condition-and-time.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.10/360-mtd-rawnand-mtk-Fix-WAITRDY-break-condition-and-time.patch b/target/linux/mediatek/patches-5.10/360-mtd-rawnand-mtk-Fix-WAITRDY-break-condition-and-time.patch new file mode 100644 index 0000000000..340e80f67b --- /dev/null +++ b/target/linux/mediatek/patches-5.10/360-mtd-rawnand-mtk-Fix-WAITRDY-break-condition-and-time.patch @@ -0,0 +1,36 @@ +From 4a4854761c9dedeedbf72c25d1317ab2e7600d4f Mon Sep 17 00:00:00 2001 +From: Hauke Mehrtens <hauke@hauke-m.de> +Date: Mon, 8 Mar 2021 23:16:17 +0100 +Subject: [PATCH] mtd: rawnand: mtk: Fix WAITRDY break condition and timeout + +This fixes NAND_OP_WAITRDY_INSTR operation in the driver. Without this +change the driver waits till the system is busy, but we should wait till +the busy flag is cleared. The readl_poll_timeout() function gets a break +condition, not a wait condition. + +In addition fix the timeout. The timeout_ms is given in ms, but the +readl_poll_timeout() function takes the timeout in us. Multiple the +given timeout by 1000 to convert it. + +Without this change, the driver does not work at all, it doesn't even +identify the NAND chip. + +Fixes: 5197360f9e09 ("mtd: rawnand: mtk: Convert the driver to exec_op()") +Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> +--- + drivers/mtd/nand/raw/mtk_nand.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +--- a/drivers/mtd/nand/raw/mtk_nand.c ++++ b/drivers/mtd/nand/raw/mtk_nand.c +@@ -488,8 +488,8 @@ static int mtk_nfc_exec_instr(struct nan + return 0; + case NAND_OP_WAITRDY_INSTR: + return readl_poll_timeout(nfc->regs + NFI_STA, status, +- status & STA_BUSY, 20, +- instr->ctx.waitrdy.timeout_ms); ++ !(status & STA_BUSY), 20, ++ instr->ctx.waitrdy.timeout_ms * 1000); + default: + break; + } |