dmaengine Archive on lore.kernel.org
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From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: <vkoul@kernel.org>, <robh+dt@kernel.org>
Cc: <dan.j.williams@intel.com>, <dmaengine@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-omap@vger.kernel.org>
Subject: [PATCH 2/5] dmaengine: ti: edma: Only reset region0 access registers
Date: Fri, 23 Aug 2019 15:56:15 +0300
Message-ID: <20190823125618.8133-3-peter.ujfalusi@ti.com> (raw)
In-Reply-To: <20190823125618.8133-1-peter.ujfalusi@ti.com>

Region0 is used by Linux, do not reset other registers controlling access
for other shadow regions.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
 drivers/dma/ti/edma.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c
index 1aae95cc0d4b..87450431f336 100644
--- a/drivers/dma/ti/edma.c
+++ b/drivers/dma/ti/edma.c
@@ -2434,11 +2434,10 @@ static int edma_probe(struct platform_device *pdev)
 		edma_assign_priority_to_queue(ecc, queue_priority_mapping[i][0],
 					      queue_priority_mapping[i][1]);
 
-	for (i = 0; i < ecc->num_region; i++) {
-		edma_write_array2(ecc, EDMA_DRAE, i, 0, 0x0);
-		edma_write_array2(ecc, EDMA_DRAE, i, 1, 0x0);
-		edma_write_array(ecc, EDMA_QRAE, i, 0x0);
-	}
+	edma_write_array2(ecc, EDMA_DRAE, 0, 0, 0x0);
+	edma_write_array2(ecc, EDMA_DRAE, 0, 1, 0x0);
+	edma_write_array(ecc, EDMA_QRAE, 0, 0x0);
+
 	ecc->info = info;
 
 	/* Init the dma device and channels */
-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki


  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23 12:56 [PATCH 0/5] dmaengine: ti: edma: Multicore usage related fixes Peter Ujfalusi
2019-08-23 12:56 ` [PATCH 1/5] dmaengine: ti: edma: Do not reset reserved paRAM slots Peter Ujfalusi
2019-08-23 12:56 ` Peter Ujfalusi [this message]
2019-08-23 12:56 ` [PATCH 3/5] dmaengine: ti: edma: Use bitmap_set() instead of open coded edma_set_bits() Peter Ujfalusi
2019-08-23 12:56 ` [PATCH 4/5] dt-bindings: dma: ti-edma: Add option for reserved channel ranges Peter Ujfalusi
2019-08-29 22:47   ` Rob Herring
2019-08-30  5:37     ` Peter Ujfalusi
2019-09-03 10:19       ` Peter Ujfalusi
2019-09-06 13:10         ` Rob Herring
2019-08-23 12:56 ` [PATCH 5/5] dmaengine: ti: edma: Add support for handling reserved channels Peter Ujfalusi
2019-09-04  9:49 ` [PATCH 0/5] dmaengine: ti: edma: Multicore usage related fixes Vinod Koul

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