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-rw-r--r--include/linux/platform_data/dma-ste-dma40.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/platform_data/dma-ste-dma40.h b/include/linux/platform_data/dma-ste-dma40.h
index 9ff93b06568..4b781014b0a 100644
--- a/include/linux/platform_data/dma-ste-dma40.h
+++ b/include/linux/platform_data/dma-ste-dma40.h
@@ -147,6 +147,16 @@ struct stedma40_chan_cfg {
* @memcpy_conf_log: default configuration of logical channel memcpy
* @disabled_channels: A vector, ending with -1, that marks physical channels
* that are for different reasons not available for the driver.
+ * @soft_lli_chans: A vector, that marks physical channels will use LLI by SW
+ * which avoids HW bug that exists in some versions of the controller.
+ * SoftLLI introduces relink overhead that could impact performace for
+ * certain use cases.
+ * @num_of_soft_lli_chans: The number of channels that needs to be configured
+ * to use SoftLLI.
+ * @use_esram_lcla: flag for mapping the lcla into esram region
+ * @num_of_phy_chans: The number of physical channels implemented in HW.
+ * 0 means reading the number of channels from DMA HW but this is only valid
+ * for 'multiple of 4' channels, like 8.
*/
struct stedma40_platform_data {
u32 dev_len;
@@ -157,7 +167,10 @@ struct stedma40_platform_data {
struct stedma40_chan_cfg *memcpy_conf_phy;
struct stedma40_chan_cfg *memcpy_conf_log;
int disabled_channels[STEDMA40_MAX_PHYS];
+ int *soft_lli_chans;
+ int num_of_soft_lli_chans;
bool use_esram_lcla;
+ int num_of_phy_chans;
};
#ifdef CONFIG_STE_DMA40