Hi Jacobe,
Am 30.07.24 um 05:30 schrieb Jacobe Zang:
WiFi modules often require 32kHz clock to function. Add support to
enable the clock to PCIe driver.
Co-developed-by: Ondrej Jirman <megi@xxxxxx>
Signed-off-by: Ondrej Jirman <megi@xxxxxx>
Signed-off-by: Jacobe Zang <jacobe.zang@xxxxxxxxxx>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
index e406e11481a62..6246e3fd7399f 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
@@ -6,6 +6,7 @@
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_net.h>
+#include <linux/clk.h>
#include <defs.h>
#include "debug.h"
@@ -70,6 +71,7 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
{
struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio;
struct device_node *root, *np = dev->of_node;
+ struct clk *clk;
const char *prop;
int irq;
int err;
@@ -113,6 +115,12 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
of_node_put(root);
}
+ clk = devm_clk_get_optional_enabled(dev, "lpo");
+ if (!IS_ERR_OR_NULL(clk)) {
+ brcmf_dbg(INFO, "enabling 32kHz clock\n");
+ clk_set_rate(clk, 32768);
+ }
even if the clock is optional, there should be a proper error handling
(e.g. the -EPROBE_DEFER case).
Best regards
+
if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
return;
