On 02/11/2023 07:29 AM, Linus Walleij wrote:
From: Kamal Dasu kdasu.kdev@gmail.com
This change adds support for flash dma v0.0.
Signed-off-by: Kamal Dasu kdasu.kdev@gmail.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com [Ported to U-Boot from the Linux kernel] Signed-off-by: Linus Walleij linus.walleij@linaro.org
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 0402cb06a74b..a934373a2992 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;@@ -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;
Acked-by: William Zhang william.zhang@broadcom.com