src/drivers/genesyslogic/gl9763e/gl9763e.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* Driver for Genesys Logic GL9763E */
   4
   5 #include <console/console.h>
   6 #include <device/device.h>
   7 #include <device/pci.h>
   8 #include <device/pci_ops.h>
   9 #include <device/pci_ids.h>
  10 #include "gl9763e.h"
  11
  12 static void gl9763e_init(struct device *dev)
  13 {
  14         uint32_t ver;
  15
  16         printk(BIOS_INFO, "GL9763E: init\n");
  17         pci_dev_init(dev);
  18
  19         /* Set VHS (Vendor Header Space) to be writable */
  20         pci_update_config32(dev, VHS, ~VHS_REV_MASK, VHS_REV_W);
  21         /* Set single AXI request */
  22         pci_or_config32(dev, SCR, SCR_AXI_REQ);
  23         /* Disable L0s support */
  24         pci_and_config32(dev, CFG_REG_2, ~CFG_REG_2_L0S);
  25
  26         if (CONFIG(DRIVERS_GENESYSLOGIC_GL9763E_L1_MAX))
  27                 /* Set  L1 entry delay to MAX */
  28                 pci_or_config32(dev, CFG_REG_2, CFG_REG_2_L1DLY_MAX);
  29
  30         /* Set SSC to 30000 ppm */
  31         pci_update_config32(dev, PLL_CTL_2, ~PLL_CTL_2_MAX_SSC_MASK, MAX_SSC_30000PPM);
  32         /* Enable SSC */
  33         pci_or_config32(dev, PLL_CTL, PLL_CTL_SSC);
  34         /* Check chip version */
  35         ver = pci_read_config32(dev, HW_VER_2);
  36         if ((ver & HW_VER_MASK) == REVISION_03) {
  37                 /* Set clock source for RX path */
  38                 pci_update_config32(dev, SD_CLKRX_DLY, ~CLK_SRC_MASK, AFTER_OUTPUT_BUFF);
  39         }
  40         /* Modify DS delay */
  41         pci_update_config32(dev, SD_CLKRX_DLY, ~HS400_RX_DELAY_MASK, HS400_RX_DELAY);
  42         /* Disable Slow mode */
  43         pci_and_config32(dev, EMMC_CTL, ~SLOW_MODE);
  44         /* Set VHS to read-only */
  45         pci_update_config32(dev, VHS, ~VHS_REV_MASK, VHS_REV_R);
  46 }
  47
  48 static struct device_operations gl9763e_ops = {
  49         .read_resources         = pci_dev_read_resources,
  50         .set_resources          = pci_dev_set_resources,
  51         .enable_resources       = pci_dev_enable_resources,
  52         .ops_pci                = &pci_dev_ops_pci,
  53         .init                   = gl9763e_init,
  54 };
  55
  56 static const unsigned short pci_device_ids[] = {
  57         PCI_DID_GLI_9763E,
  58         0
  59 };
  60
  61 static const struct pci_driver genesyslogic_gl9763e __pci_driver = {
  62         .ops            = &gl9763e_ops,
  63         .vendor         = PCI_VID_GLI,
  64         .devices        = pci_device_ids,
  65 };
  66
  67 struct chip_operations drivers_generic_genesyslogic_ops = {
  68         .name = "Genesys Logic GL9763E",
  69 };