add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/arch/powerpc/platforms/pasemi/dma_lib.c
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@@ -1,20 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2006-2007 PA Semi, Inc
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  *
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  * Common functions for DMA access on PA Semi PWRficient
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
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  */
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 #include <linux/kernel.h>
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@@ -261,8 +249,6 @@
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 	if (!chan->ring_virt)
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 		return -ENOMEM;
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-
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-	memset(chan->ring_virt, 0, ring_size * sizeof(u64));
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 	return 0;
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 }
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@@ -576,7 +562,7 @@
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 		res.start = 0xfd800000;
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 		res.end = res.start + 0x1000;
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 	}
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-	dma_status = __ioremap(res.start, resource_size(&res), 0);
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+	dma_status = ioremap_cache(res.start, resource_size(&res));
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 	pci_dev_put(iob_pdev);
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 	for (i = 0; i < MAX_TXCH; i++)