upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/arch/arm/include/asm/arch-sunxi/pwm.h

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2016 Hans de Goede <hdegoede@redhat.com>
*/
#ifndef _SUNXI_PWM_H
#define _SUNXI_PWM_H
#define SUNXI_PWM_CTRL_REG (SUNXI_PWM_BASE + 0)
#define SUNXI_PWM_CH0_PERIOD (SUNXI_PWM_BASE + 4)
#define SUNXI_PWM_CTRL_PRESCALE0(x) ((x) & 0xf)
#define SUNXI_PWM_CTRL_PRESCALE0_MASK 0xf
#define SUNXI_PWM_CTRL_ENABLE0 (0x5 << 4)
#define SUNXI_PWM_CTRL_POLARITY0(x) ((x) << 5)
#define SUNXI_PWM_CTRL_CH0_ACT_STA BIT(5)
#define SUNXI_PWM_CTRL_CLK_GATE BIT(6)
#define SUNXI_PWM_CH0_PERIOD_MAX (0xffff)
#define SUNXI_PWM_CH0_PERIOD_PRD(x) ((x & 0xffff) << 16)
#define SUNXI_PWM_CH0_PERIOD_DUTY(x) ((x) & 0xffff)
#define SUNXI_PWM_PERIOD_80PCT 0x04af03c0
#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN5I
#define SUNXI_PWM_PIN0 SUNXI_GPB(2)
#define SUNXI_PWM_MUX SUN4I_GPB_PWM
#endif
#if defined CONFIG_MACH_SUN6I
#define SUNXI_PWM_PIN0 SUNXI_GPH(13)
#define SUNXI_PWM_MUX SUN6I_GPH_PWM
#endif
#if defined CONFIG_MACH_SUN8I_A23 || defined CONFIG_MACH_SUN8I_A33
#define SUNXI_PWM_PIN0 SUNXI_GPH(0)
#define SUNXI_PWM_MUX SUN8I_GPH_PWM
#endif
struct sunxi_pwm {
u32 ctrl;
u32 ch0_period;
};
#endif