u-boot/arch/arm/mach-snapdragon/reset.c
Mateusz Kulikowski 085921368b arm: Add support for Qualcomm Snapdragon family
First supported chip is APQ8016 (that is compatible with MSM8916).
Drivers in SoC code:
- Reset controller (PSHOLD)
- Clock controller (very simple clock configuration for MMC and UART)

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:26 -04:00

40 lines
772 B
C

/*
* Qualcomm APQ8016 reset controller driver
*
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <reset.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
static int msm_reset_request(struct udevice *dev, enum reset_t type)
{
phys_addr_t addr = dev_get_addr(dev);
if (!addr)
return -EINVAL;
writel(0, addr);
return -EINPROGRESS;
}
static struct reset_ops msm_reset_ops = {
.request = msm_reset_request,
};
static const struct udevice_id msm_reset_ids[] = {
{ .compatible = "qcom,pshold" },
{ }
};
U_BOOT_DRIVER(msm_reset) = {
.name = "msm_reset",
.id = UCLASS_RESET,
.of_match = msm_reset_ids,
.ops = &msm_reset_ops,
};