mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-23 11:33:32 +00:00
401d1c4f5d
Move this out of the common header and include it only where needed. In a number of cases this requires adding "struct udevice;" to avoid adding another large header or in other cases replacing / adding missing header files that had been pulled in, very indirectly. Finally, we have a few cases where we did not need to include <asm/global_data.h> at all, so remove that include. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
78 lines
1.4 KiB
C
78 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2016 Google, Inc
|
|
*
|
|
* From coreboot broadwell support
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <pch.h>
|
|
#include <asm/global_data.h>
|
|
#include <asm/intel_regs.h>
|
|
#include <asm/io.h>
|
|
#include <asm/lpc_common.h>
|
|
#include <asm/arch/pch.h>
|
|
#include <asm/arch/spi.h>
|
|
|
|
static void set_spi_speed(void)
|
|
{
|
|
u32 fdod;
|
|
u8 ssfc;
|
|
|
|
/* Observe SPI Descriptor Component Section 0 */
|
|
writel(0x1000, SPI_REG(SPIBAR_FDOC));
|
|
|
|
/* Extract the Write/Erase SPI Frequency from descriptor */
|
|
fdod = readl(SPI_REG(SPIBAR_FDOD));
|
|
fdod >>= 24;
|
|
fdod &= 7;
|
|
|
|
/* Set Software Sequence frequency to match */
|
|
ssfc = readb(SPI_REG(SPIBAR_SSFC + 2));
|
|
ssfc &= ~7;
|
|
ssfc |= fdod;
|
|
writeb(ssfc, SPI_REG(SPIBAR_SSFC + 2));
|
|
}
|
|
|
|
static int broadwell_lpc_early_init(struct udevice *dev)
|
|
{
|
|
set_spi_speed();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lpc_init_extra(struct udevice *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int broadwell_lpc_probe(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
|
|
if (!(gd->flags & GD_FLG_RELOC)) {
|
|
ret = lpc_common_early_init(dev);
|
|
if (ret) {
|
|
debug("%s: lpc_early_init() failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
return broadwell_lpc_early_init(dev);
|
|
}
|
|
|
|
return lpc_init_extra(dev);
|
|
}
|
|
|
|
static const struct udevice_id broadwell_lpc_ids[] = {
|
|
{ .compatible = "intel,broadwell-lpc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(broadwell_lpc_drv) = {
|
|
.name = "lpc",
|
|
.id = UCLASS_LPC,
|
|
.of_match = broadwell_lpc_ids,
|
|
.probe = broadwell_lpc_probe,
|
|
};
|