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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f3c8cfc237
Current pxa3xx_nand controller has two chip select which both be workable. This patch enable this feature. Update platform driver to support this feature. Another notice should be taken that: When you want to use this feature, you should not enable the keep configuration feature, for two chip select could be attached with different nand chip. The different page size and timing requirement make the keep configuration impossible. Signed-off-by: Lei Wen <leiwen@marvell.com>
153 lines
3.6 KiB
C
153 lines
3.6 KiB
C
/*
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* arch/arm/mach-pxa/colibri-pxa3xx.c
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*
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* Common functions for all Toradex PXA3xx modules
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*
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* Daniel Mack <daniel@caiaq.de>
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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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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/etherdevice.h>
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#include <asm/mach-types.h>
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#include <mach/hardware.h>
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#include <asm/sizes.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irq.h>
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#include <mach/pxa3xx-regs.h>
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#include <mach/mfp-pxa300.h>
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#include <mach/colibri.h>
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#include <mach/mmc.h>
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#include <mach/pxafb.h>
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#include <plat/pxa3xx_nand.h>
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#include "generic.h"
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#include "devices.h"
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#if defined(CONFIG_AX88796)
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#define ETHER_ADDR_LEN 6
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static u8 ether_mac_addr[ETHER_ADDR_LEN];
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void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
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{
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int i;
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u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
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/*
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* If the bootloader passed in a serial boot tag, which contains a
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* valid ethernet MAC, pass it to the interface. Toradex ships the
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* modules with their own bootloader which provides a valid MAC
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* this way.
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*/
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for (i = 0; i < ETHER_ADDR_LEN; i++) {
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ether_mac_addr[i] = serial & 0xff;
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serial >>= 8;
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}
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if (is_valid_ether_addr(ether_mac_addr)) {
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plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
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plat_data->mac_addr = ether_mac_addr;
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printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
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__func__);
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} else {
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plat_data->flags |= AXFLG_MAC_FROMDEV;
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printk(KERN_INFO "%s(): no valid serial boot tag found, "
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"taking MAC from device\n", __func__);
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}
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}
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#endif
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#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
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static int lcd_bl_pin;
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/*
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* LCD panel (Sharp LQ043T3DX02)
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*/
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static void colibri_lcd_backlight(int on)
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{
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gpio_set_value(lcd_bl_pin, !!on);
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}
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static struct pxafb_mode_info sharp_lq43_mode = {
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.pixclock = 101936,
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.xres = 480,
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.yres = 272,
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.bpp = 32,
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.depth = 18,
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.hsync_len = 41,
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.left_margin = 2,
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.right_margin = 2,
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.vsync_len = 10,
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.upper_margin = 2,
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.lower_margin = 2,
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.sync = 0,
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.cmap_greyscale = 0,
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};
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static struct pxafb_mach_info sharp_lq43_info = {
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.modes = &sharp_lq43_mode,
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.num_modes = 1,
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.cmap_inverse = 0,
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.cmap_static = 0,
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.lcd_conn = LCD_COLOR_TFT_18BPP,
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.pxafb_backlight_power = colibri_lcd_backlight,
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};
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void __init colibri_pxa3xx_init_lcd(int bl_pin)
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{
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lcd_bl_pin = bl_pin;
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gpio_request(bl_pin, "lcd backlight");
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gpio_direction_output(bl_pin, 0);
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pxa_set_fb_info(NULL, &sharp_lq43_info);
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}
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#endif
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#if defined(CONFIG_MTD_NAND_PXA3xx) || defined(CONFIG_MTD_NAND_PXA3xx_MODULE)
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static struct mtd_partition colibri_nand_partitions[] = {
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{
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.name = "bootloader",
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.offset = 0,
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.size = SZ_512K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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{
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_4M,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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{
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.name = "reserved",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_1M,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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{
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.name = "fs",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct pxa3xx_nand_platform_data colibri_nand_info = {
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.enable_arbiter = 1,
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.keep_config = 1,
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.num_cs = 1,
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.parts[0] = colibri_nand_partitions,
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.nr_parts[0] = ARRAY_SIZE(colibri_nand_partitions),
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};
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void __init colibri_pxa3xx_init_nand(void)
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{
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pxa3xx_set_nand_info(&colibri_nand_info);
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}
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#endif
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