gl9763e.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
/* Driver for Genesys Logic GL9763E */
 
#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include <device/pci.h>
#include <device/pci_ops.h>
#include <device/pci_ids.h>
#include "gl9763e.h"
 
static void gl9763e_init(struct device *dev)
{
        uint32_t ver;
 
        printk(BIOS_INFO, "GL9763E: init\n");
        pci_dev_init(dev);
 
        /* Set VHS (Vendor Header Space) to be writable */
        pci_update_config32(dev, VHS, ~VHS_REV_MASK, VHS_REV_W);
        /* Set single AXI request */
        pci_or_config32(dev, SCR, SCR_AXI_REQ);
        /* Disable L0s support */
        pci_and_config32(dev, CFG_REG_2, ~CFG_REG_2_L0S);
 
        if (CONFIG(DRIVERS_GENESYSLOGIC_GL9763E_L1_MAX))
                /* Set  L1 entry delay to MAX */
                pci_or_config32(dev, CFG_REG_2, CFG_REG_2_L1DLY_MAX);
 
        /* Set SSC to 30000 ppm */
        pci_update_config32(dev, PLL_CTL_2, ~PLL_CTL_2_MAX_SSC_MASK, MAX_SSC_30000PPM);
        /* Enable SSC */
        pci_or_config32(dev, PLL_CTL, PLL_CTL_SSC);
        /* Check chip version */
        ver = pci_read_config32(dev, HW_VER_2);
        if ((ver & HW_VER_MASK) == REVISION_03) {
                /* Set clock source for RX path */
                pci_update_config32(dev, SD_CLKRX_DLY, ~CLK_SRC_MASK, AFTER_OUTPUT_BUFF);
        }
        /* Modify DS delay */
        pci_update_config32(dev, SD_CLKRX_DLY, ~HS400_RX_DELAY_MASK, HS400_RX_DELAY);
        /* Disable Slow mode */
        pci_and_config32(dev, EMMC_CTL, ~SLOW_MODE);
        /* Set VHS to read-only */
        pci_update_config32(dev, VHS, ~VHS_REV_MASK, VHS_REV_R);
}
 
static struct device_operations gl9763e_ops = {
        .read_resources         = pci_dev_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_dev_enable_resources,
        .ops_pci                = &pci_dev_ops_pci,
        .init                   = gl9763e_init,
};
 
static const unsigned short pci_device_ids[] = {
        PCI_DID_GLI_9763E,
        0
};
 
static const struct pci_driver genesyslogic_gl9763e __pci_driver = {
        .ops            = &gl9763e_ops,
        .vendor         = PCI_VID_GLI,
        .devices        = pci_device_ids,
};
 
struct chip_operations drivers_generic_genesyslogic_ops = {
        CHIP_NAME("Genesys Logic GL9763E")
};