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spi: ich: Support of-platdata for fast-spi

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The Intel Fast SPI interface is similar to ICH. Add of-platdata support
for this using the "intel,fast-spi" compatible string.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-12-06 21:42:45 -07:00 committed by Bin Meng
parent 43c145b8b3
commit 0d3ee3e199
1 changed files with 15 additions and 3 deletions
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18
drivers/spi/ich.c
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@ -10,6 +10,7 @@
#include <common.h>
#include <div64.h>
#include <dm.h>
#include <dt-structs.h>
#include <errno.h>
#include <malloc.h>
#include <pch.h>
@ -28,9 +29,13 @@
#endif
struct ich_spi_platdata {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct dtd_intel_fast_spi dtplat;
#endif
enum ich_version ich_version; /* Controller version, 7 or 9 */
bool lockdown; /* lock down controller settings? */
ulong mmio_base; /* Base of MMIO registers */
pci_dev_t bdf; /* PCI address used by of-platdata */
};
static u8 ich_readb(struct ich_spi_priv *priv, int reg)
@ -594,6 +599,8 @@ static int ich_spi_child_pre_probe(struct udevice *dev)
static int ich_spi_ofdata_to_platdata(struct udevice *dev)
{
struct ich_spi_platdata *plat = dev_get_platdata(dev);
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct ich_spi_priv *priv = dev_get_priv(dev);
/* Find a PCH if there is one */
@ -603,8 +610,13 @@ static int ich_spi_ofdata_to_platdata(struct udevice *dev)
plat->ich_version = dev_get_driver_data(dev);
plat->lockdown = dev_read_bool(dev, "intel,spi-lock-down");
pch_get_spi_base(priv->pch, &plat->mmio_base);
#else
plat->ich_version = ICHV_APL;
plat->mmio_base = plat->dtplat.early_regs[0];
plat->bdf = pci_ofplat_get_devfn(plat->dtplat.reg[0]);
#endif
debug("%s: mmio_base=%lx\n", __func__, plat->mmio_base);
return 0;
}
@ -632,8 +644,8 @@ static const struct udevice_id ich_spi_ids[] = {
{ }
};
U_BOOT_DRIVER(ich_spi) = {
.name = "ich_spi",
U_BOOT_DRIVER(intel_fast_spi) = {
.name = "intel_fast_spi",
.id = UCLASS_SPI,
.of_match = ich_spi_ids,
.ops = &ich_spi_ops,