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
gl9763e_init(struct device * dev)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 };
70