mtd: nand: brcmnand: Add support for flash-dma v0
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>
Acked-by: William Zhang <william.zhang@broadcom.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index 0402cb0..a934373 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -120,6 +120,18 @@
};
#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 @@
/* 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 @@
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;