add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/spi/spi-xilinx.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Xilinx SPI controller driver (master mode only)
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  *
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@@ -8,9 +9,6 @@
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  * Copyright (c) 2009 Intel Corporation
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  * 2002-2007 (c) MontaVista Software, Inc.
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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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 #include <linux/module.h>
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@@ -393,7 +391,7 @@
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 	struct xilinx_spi *xspi;
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 	struct xspi_platform_data *pdata;
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 	struct resource *res;
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-	int ret, num_cs = 0, bits_per_word = 8;
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+	int ret, num_cs = 0, bits_per_word;
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 	struct spi_master *master;
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 	u32 tmp;
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 	u8 i;
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@@ -405,6 +403,11 @@
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 	} else {
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 		of_property_read_u32(pdev->dev.of_node, "xlnx,num-ss-bits",
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 					  &num_cs);
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+		ret = of_property_read_u32(pdev->dev.of_node,
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+					   "xlnx,num-transfer-bits",
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+					   &bits_per_word);
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+		if (ret)
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+			bits_per_word = 8;
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 	}
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 	if (!num_cs) {
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@@ -488,8 +491,7 @@
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 		goto put_master;
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 	}
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-	dev_info(&pdev->dev, "at 0x%08llX mapped to 0x%p, irq=%d\n",
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-		(unsigned long long)res->start, xspi->regs, xspi->irq);
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+	dev_info(&pdev->dev, "at %pR, irq=%d\n", res, xspi->irq);
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 	if (pdata) {
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 		for (i = 0; i < pdata->num_devices; i++)