diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/drivers/ata/dwc_ahci.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/drivers/ata/dwc_ahci.c')
| -rw-r--r-- | roms/u-boot/drivers/ata/dwc_ahci.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/ata/dwc_ahci.c b/roms/u-boot/drivers/ata/dwc_ahci.c new file mode 100644 index 000000000..826fea71c --- /dev/null +++ b/roms/u-boot/drivers/ata/dwc_ahci.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * DWC SATA platform driver + * + * (C) Copyright 2016 + * Texas Instruments Incorporated, <www.ti.com> + * + * Author: Mugunthan V N <mugunthanvnm@ti.com> + */ + +#include <common.h> +#include <dm.h> +#include <ahci.h> +#include <scsi.h> +#include <sata.h> +#include <asm/arch/sata.h> +#include <asm/io.h> +#include <generic-phy.h> + +struct dwc_ahci_priv { + void *base; + void *wrapper_base; +}; + +static int dwc_ahci_bind(struct udevice *dev) +{ + struct udevice *scsi_dev; + + return ahci_bind_scsi(dev, &scsi_dev); +} + +static int dwc_ahci_of_to_plat(struct udevice *dev) +{ + struct dwc_ahci_priv *priv = dev_get_priv(dev); + fdt_addr_t addr; + + priv->base = map_physmem(dev_read_addr(dev), sizeof(void *), + MAP_NOCACHE); + + addr = devfdt_get_addr_index(dev, 1); + if (addr != FDT_ADDR_T_NONE) { + priv->wrapper_base = map_physmem(addr, sizeof(void *), + MAP_NOCACHE); + } else { + priv->wrapper_base = NULL; + } + + return 0; +} + +static int dwc_ahci_probe(struct udevice *dev) +{ + struct dwc_ahci_priv *priv = dev_get_priv(dev); + int ret; + struct phy phy; + + ret = generic_phy_get_by_name(dev, "sata-phy", &phy); + if (ret) { + pr_err("can't get the phy from DT\n"); + return ret; + } + + ret = generic_phy_init(&phy); + if (ret) { + pr_debug("unable to initialize the sata phy\n"); + return ret; + } + + ret = generic_phy_power_on(&phy); + if (ret) { + pr_debug("unable to power on the sata phy\n"); + return ret; + } + + if (priv->wrapper_base) { + u32 val = TI_SATA_IDLE_NO | TI_SATA_STANDBY_NO; + + /* Enable SATA module, No Idle, No Standby */ + writel(val, priv->wrapper_base + TI_SATA_SYSCONFIG); + } + + return ahci_probe_scsi(dev, (ulong)priv->base); +} + +static const struct udevice_id dwc_ahci_ids[] = { + { .compatible = "snps,dwc-ahci" }, + { } +}; + +U_BOOT_DRIVER(dwc_ahci) = { + .name = "dwc_ahci", + .id = UCLASS_AHCI, + .of_match = dwc_ahci_ids, + .bind = dwc_ahci_bind, + .of_to_plat = dwc_ahci_of_to_plat, + .ops = &scsi_ops, + .probe = dwc_ahci_probe, + .priv_auto = sizeof(struct dwc_ahci_priv), +}; |