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nbhw18: only enable pcie clock, if wifi module is in slot

This commit is contained in:
user 2018-03-26 14:34:55 +02:00
parent 100330b244
commit 6c46f896a1
1 changed files with 24 additions and 2 deletions
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26
board/nm/nbhw18_v2/nbhw_fpga_config.c
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@ -161,6 +161,25 @@ static int add_pcie_slot(ofnode fdt)
return 0;
}
static int has_slot_wlan(int slot)
{
int module;
char slotDescr[20];
char pdValue[200];
sprintf(slotDescr, "slot=%d", slot);
for (module=0; module<4; module++) {
strcpy(pdValue, "" ); /*init with an empty string*/
if (bd_get_pd_module(module, pdValue, sizeof(pdValue))==0) {
/* Wifi module needs PCIe */
if ((strstr(pdValue, slotDescr)) && (strstr(pdValue, "wlan-")))
return 1;
}
}
return 0;
}
static int configure_pcie_slots(void)
{
int i;
@ -190,8 +209,11 @@ static int configure_pcie_slots(void)
/* Enable PCIe clock Note: Slot 1 has always clock. Slot 0 & extension
slot cannot have clock at same time. */
for (i = 0; i < 1; i ++) {
dm_gpio_set_value(&pcie_slots[i].clk, 1);
for (i = 0; i < 2; i ++) {
if (has_slot_wlan(i)) {
/* Only enable PCIe clock on WiFi modules as it confuses some LTE modems */
dm_gpio_set_value(&pcie_slots[i].clk, 1);
}
}
for (i = 0; i < pcie_slot_count;i ++) {