2023-05-26 16:50:15 +00:00
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From e84e2430ee0e483842b4ff013ae8a6e7e2fa2734 Mon Sep 17 00:00:00 2001
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From: Weijie Gao <weijie.gao@mediatek.com>
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Date: Wed, 1 Apr 2020 02:07:58 +0800
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Subject: [PATCH 1/2] mtd: rawnand: add driver support for MT7621 nand
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flash controller
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This patch adds NAND flash controller driver for MediaTek MT7621 SoC.
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The NAND flash controller is similar with controllers described in
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mtk_nand.c, except that the controller from MT7621 doesn't support DMA
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transmission, and some registers' offset and fields are different.
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Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
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---
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drivers/mtd/nand/raw/Kconfig | 8 +
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drivers/mtd/nand/raw/Makefile | 1 +
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drivers/mtd/nand/raw/mt7621_nand.c | 1348 ++++++++++++++++++++++++++++++++++++
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3 files changed, 1357 insertions(+)
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create mode 100644 drivers/mtd/nand/raw/mt7621_nand.c
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--- a/drivers/mtd/nand/raw/Kconfig
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+++ b/drivers/mtd/nand/raw/Kconfig
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@@ -352,6 +352,14 @@ config MTD_NAND_QCOM
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Enables support for NAND flash chips on SoCs containing the EBI2 NAND
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controller. This controller is found on IPQ806x SoC.
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+config MTD_NAND_MT7621
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+ tristate "MT7621 NAND controller"
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+ depends on SOC_MT7621 || COMPILE_TEST
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+ depends on HAS_IOMEM
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+ help
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+ Enables support for NAND controller on MT7621 SoC.
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+ This driver uses PIO mode for data transmission instead of DMA mode.
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+
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config MTD_NAND_MTK
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tristate "MTK NAND controller"
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depends on MTD_NAND_ECC_MEDIATEK
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--- a/drivers/mtd/nand/raw/Makefile
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+++ b/drivers/mtd/nand/raw/Makefile
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@@ -48,6 +48,7 @@ obj-$(CONFIG_MTD_NAND_SUNXI) += sunxi_n
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obj-$(CONFIG_MTD_NAND_HISI504) += hisi504_nand.o
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obj-$(CONFIG_MTD_NAND_BRCMNAND) += brcmnand/
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obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nandc.o
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+obj-$(CONFIG_MTD_NAND_MT7621) += mt7621_nand.o
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obj-$(CONFIG_MTD_NAND_MTK) += mtk_nand.o
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obj-$(CONFIG_MTD_NAND_MXIC) += mxic_nand.o
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obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_nand.o
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