2 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
4 * Board-specific low level initialization code. Called at the very end
5 * of arch/arm/cpu/arm926ejs/davinci/lowlevel_init.S. Just returns if there is no
6 * initialization required.
8 * For _OLDER_ Sonata boards sets up GPIO4 to control NAND WP line. Newer
9 * Sonata boards, AFAIK, don't use this so it's just return by default. Ask
10 * Visioneering if they reinvented the wheel once again to make sure :)
12 * SPDX-License-Identifier: GPL-2.0+
19 #ifdef SONATA_BOARD_GPIOWP
20 /* Set PINMUX0 to enable GPIO4 */
27 /* Enable GPIO LPSC module */
37 and r2, r2, $0xfffffff8
38 orr r2, r2, $0x00000003
41 orr r2, r2, $0x00000200
56 and r2, r2, $0x0000001f
67 /* Set it to 0 (Write Protect) */
68 ldr r0, GPIO_CLR_DATA01
74 #ifdef SONATA_BOARD_GPIOWP