mxs: dma: Fix APBH DMA driver for MX23
The MX23 has less channels for the APBH DMA, sligtly different register
layout and some bits in those registers are placed differently. Reflect
this in the driver. This patch fixes MMC/DMA issue on MX23.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/dma/apbh_dma.c b/drivers/dma/apbh_dma.c
index 37a941c..0c1cd83 100644
--- a/drivers/dma/apbh_dma.c
+++ b/drivers/dma/apbh_dma.c
@@ -223,13 +223,19 @@
struct mxs_apbh_regs *apbh_regs =
(struct mxs_apbh_regs *)MXS_APBH_BASE;
int ret;
+#if defined(CONFIG_MX23)
+ uint32_t setreg = (uint32_t)(&apbh_regs->hw_apbh_ctrl0_set);
+ uint32_t offset = APBH_CTRL0_RESET_CHANNEL_OFFSET;
+#elif defined(CONFIG_MX28)
+ uint32_t setreg = (uint32_t)(&apbh_regs->hw_apbh_channel_ctrl_set);
+ uint32_t offset = APBH_CHANNEL_CTRL_RESET_CHANNEL_OFFSET;
+#endif
ret = mxs_dma_validate_chan(channel);
if (ret)
return ret;
- writel(1 << (channel + APBH_CHANNEL_CTRL_RESET_CHANNEL_OFFSET),
- &apbh_regs->hw_apbh_channel_ctrl_set);
+ writel(1 << (channel + offset), setreg);
return 0;
}