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[PATCH v1 2/5] dma/xlnx-zdma: Populate DBG0.CMN_BUF_FREE
From: |
Edgar E. Iglesias |
Subject: |
[PATCH v1 2/5] dma/xlnx-zdma: Populate DBG0.CMN_BUF_FREE |
Date: |
Thu, 2 Apr 2020 15:47:18 +0200 |
From: "Edgar E. Iglesias" <address@hidden>
Populate DBG0.CMN_BUF_FREE so that SW can see some free space.
Signed-off-by: Edgar E. Iglesias <address@hidden>
---
hw/dma/xlnx-zdma.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/hw/dma/xlnx-zdma.c b/hw/dma/xlnx-zdma.c
index a6c5b2304a..6a4699757a 100644
--- a/hw/dma/xlnx-zdma.c
+++ b/hw/dma/xlnx-zdma.c
@@ -680,6 +680,12 @@ static RegisterAccessInfo zdma_regs_info[] = {
},{ .name = "ZDMA_CH_DBG0", .addr = A_ZDMA_CH_DBG0,
.rsvd = 0xfffffe00,
.ro = 0x1ff,
+
+ /*
+ * There's SW out there that will check the debug regs for free space.
+ * Claim that we always have 0x100 free.
+ */
+ .reset = 0x100
},{ .name = "ZDMA_CH_DBG1", .addr = A_ZDMA_CH_DBG1,
.rsvd = 0xfffffe00,
.ro = 0x1ff,
--
2.20.1