The current QCOM NAND driver only support EBI2 NAND which uses ADM DMA. The latest QCOM controller supports QPIC NAND which uses BAM DMA. NAND registers and programming sequence are same for EBI2 and QPIC NAND so the same driver can support QPIC NAND also by adding the BAM DMA support. This patch series adds the support for QPIC NAND controller version 1.4.0 available in IPQ4019 and QPIC NAND controller version 1.5.0 available in IPQ8074.
The kernel MTD tests have been run to validate all these patches in IPQ8064 AP148, IPQ4019 DK04 and IPQ8074 HK01 boards and all the MTD tests are passing on these boards. The QPIC NAND requires the command channel support for BAM DMA engine and currently BAM engine does not support the command descriptors so the following patches have been posted for the same in dmaengine mailing list. The above patches are dependent upon these BAM DMA patches. https://www.spinics.net/lists/kernel/msg2542483.html Abhishek Sahu (14): qcom: mtd: nand: Add driver data for QPIC DMA qcom: mtd: nand: add and initialize QPIC DMA resources qcom: mtd: nand: Fixed config error for BCH qcom: mtd: nand: reorganize nand devices probing qcom: mtd: nand: allocate bam transaction qcom: mtd: nand: add bam dma descriptor handling qcom: mtd: nand: support for passing flags in transfer functions qcom: mtd: nand: Add support for additional CSRs qcom: mtd: nand: BAM support for read page qcom: mtd: nand: support for QPIC Page read/write qcom: mtd: nand: BAM raw read and write support qcom: mtd: nand: change register offset defines with enums qcom: mtd: nand: support for QPIC version 1.5.0 qcom: mtd: nand: programmed NAND_DEV_CMD_VLD register .../devicetree/bindings/mtd/qcom_nandc.txt | 110 +- drivers/mtd/nand/qcom_nandc.c | 1114 +++++++++++++++++--- 2 files changed, 1050 insertions(+), 174 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
