Zynq Emulator的电池驱动：SPI接口与配置

spi1: spi@e0007000 {
compatible = "xlnx,ps7-spi-1.00.a";
reg = <0xe0007000 0x1000>;
status = "okay";
interrupt-parent = <&ps7_scugic_0>;
interrupts = <0 49 4>;
clocks = <&clkc 26>, <&clkc 35>;
clock-names = "ref_clk", "aper_clk";
num-chip-select = <3>;
#address-cells = <1>;
#size-cells = <0>;

battery@0 {
compatible = "zynq,battery";
reg = <0>;
spi-cpha;
spi-cpol;
spi-max-frequency = <1000000>;
bat-int = <&ps7_gpio_0 50 0>;
};
};



/*
 * Power supply driver for the zynq emulator
 *
 * Copyright (C) 2008 Google, Inc.
 * Copyright (C) 2012 Intel, Inc.
 * Copyright (C) 2013 Intel, Inc.

 * Author: Mike Lockwood <lockwood@android.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/module.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/spi/spi.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>


struct zynq_battery_data {
void __iomem *reg_base;
int irq;