2 * Copyright Altera Corporation (C) 2016. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program. If not, see <http://www.gnu.org/licenses/>.
17 #include <linux/genalloc.h>
18 #include <linux/module.h>
19 #include <linux/of_address.h>
20 #include <linux/of_platform.h>
22 #define ALTR_OCRAM_CLEAR_ECC 0x00000018
23 #define ALTR_OCRAM_ECC_EN 0x00000019
25 void socfpga_init_ocram_ecc(void)
27 struct device_node
*np
;
28 void __iomem
*mapped_ocr_edac_addr
;
30 /* Find the OCRAM EDAC device tree node */
31 np
= of_find_compatible_node(NULL
, NULL
, "altr,socfpga-ocram-ecc");
33 pr_err("Unable to find socfpga-ocram-ecc\n");
37 mapped_ocr_edac_addr
= of_iomap(np
, 0);
39 if (!mapped_ocr_edac_addr
) {
40 pr_err("Unable to map OCRAM ecc regs.\n");
44 /* Clear any pending OCRAM ECC interrupts, then enable ECC */
45 writel(ALTR_OCRAM_CLEAR_ECC
, mapped_ocr_edac_addr
);
46 writel(ALTR_OCRAM_ECC_EN
, mapped_ocr_edac_addr
);
48 iounmap(mapped_ocr_edac_addr
);