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/* SPDX-License-Identifier: GPL-2.0-only */
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "chip.h"
#include "hudson.h"
static void sd_init(struct device *dev)
{
struct southbridge_amd_pi_hudson_config *sd_chip = dev->chip_info;
u32 stepping = pci_read_config32(pcidev_on_root(0x18, 3), 0xFC);
u8 sd_mode = 0;
if (sd_chip)
sd_mode = sd_chip->sd_mode;
if (sd_mode == 3) { /* SD 3.0 mode */
pci_write_config32(dev, 0xA4, 0x31FEC8B2);
pci_write_config32(dev, 0xA8, 0x00002503);
pci_write_config32(dev, 0xB0, 0x02180C19);
pci_write_config32(dev, 0xD0, 0x0000078B);
}
else { /* SD 2.0 mode */
if ((stepping & 0x0000000F) == 0) { /* Stepping A0 */
pci_write_config32(dev, 0xA4, 0x31DE32B2);
pci_write_config32(dev, 0xB0, 0x01180C19);
pci_write_config32(dev, 0xD0, 0x0000058B);
}
else { /* Stepping >= A1 */
pci_write_config32(dev, 0xA4, 0x31FE32B2);
pci_write_config32(dev, 0xA8, 0x00000070);
pci_write_config32(dev, 0xB0, 0x01180C19);
pci_write_config32(dev, 0xD0, 0x0000078B);
}
}
}
static struct device_operations sd_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = sd_init,
};
static const struct pci_driver sd_driver __pci_driver = {
.ops = &sd_ops,
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_YANGTZE_SD,
};
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