From 2de9ff609db9f5dd72eff7d9c9336ceeb2ec7d6a Mon Sep 17 00:00:00 2001 From: Kamal Dasu Date: Sat, 11 Feb 2023 16:29:03 +0100 Subject: [PATCH] mtd: nand: brcmnand: Add support for flash-dma v0 This change adds support for flash dma v0.0. Signed-off-by: Kamal Dasu Signed-off-by: Miquel Raynal [Ported to U-Boot from the Linux kernel] Signed-off-by: Linus Walleij Acked-by: William Zhang Signed-off-by: Dario Binacchi --- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index 0402cb06a7..a934373a29 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -120,6 +120,18 @@ enum flash_dma_reg { }; #ifndef __UBOOT__ +/* flash_dma registers v0*/ +static const u16 flash_dma_regs_v0[] = { + [FLASH_DMA_REVISION] = 0x00, + [FLASH_DMA_FIRST_DESC] = 0x04, + [FLASH_DMA_CTRL] = 0x08, + [FLASH_DMA_MODE] = 0x0c, + [FLASH_DMA_STATUS] = 0x10, + [FLASH_DMA_INTERRUPT_DESC] = 0x14, + [FLASH_DMA_ERROR_STATUS] = 0x18, + [FLASH_DMA_CURRENT_DESC] = 0x1c, +}; + /* flash_dma registers v1*/ static const u16 flash_dma_regs_v1[] = { [FLASH_DMA_REVISION] = 0x00, @@ -614,6 +626,8 @@ static void brcmnand_flash_dma_revision_init(struct brcmnand_controller *ctrl) /* flash_dma register offsets */ if (ctrl->nand_version >= 0x0703) ctrl->flash_dma_offsets = flash_dma_regs_v4; + else if (ctrl->nand_version == 0x0602) + ctrl->flash_dma_offsets = flash_dma_regs_v0; else ctrl->flash_dma_offsets = flash_dma_regs_v1; } @@ -1645,8 +1659,11 @@ static void brcmnand_dma_run(struct brcmnand_host *host, dma_addr_t desc) flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC, lower_32_bits(desc)); (void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC); - flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT, upper_32_bits(desc)); - (void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT); + if (ctrl->nand_version > 0x0602) { + flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT, + upper_32_bits(desc)); + (void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT); + } /* Start FLASH_DMA engine */ ctrl->dma_pending = true;