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spi: spi-qpic: add driver for QCOM SPI NAND flash Interface

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This driver implements support for the SPI-NAND mode of QCOM NAND Flash
Interface as a SPI-MEM controller with pipelined ECC capability.

Co-developed-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Co-developed-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Link: https://patch.msgid.link/20250224111414.2809669-3-quic_mdalam@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Md Sadre Alam 2025-02-24 16:44:14 +05:30 committed by Mark Brown
parent fd6bc2ba41
commit 7304d19090
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GPG Key ID: 24D68B725D5487D0
5 changed files with 1652 additions and 0 deletions
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4
drivers/mtd/nand/Makefile
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@ -3,7 +3,11 @@
nandcore-objs := core.o bbt.o
obj-$(CONFIG_MTD_NAND_CORE) += nandcore.o
obj-$(CONFIG_MTD_NAND_ECC_MEDIATEK) += ecc-mtk.o
ifeq ($(CONFIG_SPI_QPIC_SNAND),y)
obj-$(CONFIG_SPI_QPIC_SNAND) += qpic_common.o
else
obj-$(CONFIG_MTD_NAND_QCOM) += qpic_common.o
endif
obj-y += onenand/
obj-y += raw/
obj-y += spi/

9
drivers/spi/Kconfig
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@ -936,6 +936,15 @@ config SPI_QCOM_QSPI
help
QSPI(Quad SPI) driver for Qualcomm QSPI controller.
config SPI_QPIC_SNAND
bool "QPIC SNAND controller"
depends on ARCH_QCOM || COMPILE_TEST
select MTD
help
QPIC_SNAND (QPIC SPI NAND) driver for Qualcomm QPIC controller.
QPIC controller supports both parallel nand and serial nand.
This config will enable serial nand driver for QPIC controller.
config SPI_QUP
tristate "Qualcomm SPI controller with QUP interface"
depends on ARCH_QCOM || COMPILE_TEST

1
drivers/spi/Makefile
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@ -117,6 +117,7 @@ obj-$(CONFIG_SPI_PXA2XX) += spi-pxa2xx-platform.o
obj-$(CONFIG_SPI_PXA2XX_PCI) += spi-pxa2xx-pci.o
obj-$(CONFIG_SPI_QCOM_GENI) += spi-geni-qcom.o
obj-$(CONFIG_SPI_QCOM_QSPI) += spi-qcom-qspi.o
obj-$(CONFIG_SPI_QPIC_SNAND) += spi-qpic-snand.o
obj-$(CONFIG_SPI_QUP) += spi-qup.o
obj-$(CONFIG_SPI_ROCKCHIP) += spi-rockchip.o
obj-$(CONFIG_SPI_ROCKCHIP_SFC) += spi-rockchip-sfc.o

1631
drivers/spi/spi-qpic-snand.c Normal file
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File diff suppressed because it is too large Load Diff

7
include/linux/mtd/nand-qpic-common.h
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@ -325,6 +325,10 @@ struct nandc_regs {
__le32 read_location_last1;
__le32 read_location_last2;
__le32 read_location_last3;
__le32 spi_cfg;
__le32 num_addr_cycle;
__le32 busy_wait_cnt;
__le32 flash_feature;
__le32 erased_cw_detect_cfg_clr;
__le32 erased_cw_detect_cfg_set;
@ -339,6 +343,7 @@ struct nandc_regs {
*
* @core_clk: controller clock
* @aon_clk: another controller clock
* @iomacro_clk: io macro clock
*
* @regs: a contiguous chunk of memory for DMA register
* writes. contains the register values to be
@ -348,6 +353,7 @@ struct nandc_regs {
* initialized via DT match data
*
* @controller: base controller structure
* @qspi: qpic spi structure
* @host_list: list containing all the chips attached to the
* controller
*
@ -392,6 +398,7 @@ struct qcom_nand_controller {
const struct qcom_nandc_props *props;
struct nand_controller *controller;
struct qpic_spi_nand *qspi;
struct list_head host_list;
union {