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--- a/drivers/mtd/nand/nand_base.c
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+++ b/drivers/mtd/nand/nand_base.c
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@@ -4262,8 +4262,13 @@ static bool find_full_id_nand(struct mtd
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chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
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chip->ecc_step_ds = NAND_ECC_STEP(type);
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- mode = type->onfi_timing_mode_default;
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- chip->sdr_timings = onfi_async_timing_mode_to_sdr_timings(mode);
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+ if (type->custom_sdr_timing) {
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+ chip->sdr_timings = type->custom_sdr_timing;
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+ } else {
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+ mode = type->onfi_timing_mode_default;
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+ chip->sdr_timings =
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+ onfi_async_timing_mode_to_sdr_timings(mode);
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+ }
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*busw = type->options & NAND_BUSWIDTH_16;
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--- a/include/linux/mtd/nand.h
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+++ b/include/linux/mtd/nand.h
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@@ -988,6 +988,7 @@ struct nand_flash_dev {
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uint16_t step_ds;
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} ecc;
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int onfi_timing_mode_default;
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+ const struct nand_sdr_timings *custom_sdr_timing;
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};
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/**
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