diff mbox series

[v5,4/5] wifi: brcmfmac: Add optional lpo clock enable support

Message ID 20240730033053.4092132-5-jacobe.zang@wesion.com
State New
Headers show
Series Add AP6275P wireless support | expand

Commit Message

Jacobe Zang July 30, 2024, 3:30 a.m. UTC
WiFi modules often require 32kHz clock to function. Add support to
enable the clock to PCIe driver.

Co-developed-by: Ondrej Jirman <megi@xff.cz>
Signed-off-by: Ondrej Jirman <megi@xff.cz>
Signed-off-by: Jacobe Zang <jacobe.zang@wesion.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Arend Van Spriel July 30, 2024, 6:46 p.m. UTC | #1
On 7/30/2024 5:30 AM, Jacobe Zang wrote:
> WiFi modules often require 32kHz clock to function. Add support to
> enable the clock to PCIe driver.
> 
> Co-developed-by: Ondrej Jirman <megi@xff.cz>
> Signed-off-by: Ondrej Jirman <megi@xff.cz>
> Signed-off-by: Jacobe Zang <jacobe.zang@wesion.com>
> ---
>   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);
> +	}
> +
>   	if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
>   		return;

This if-statement should be the first check in brcmf_of_probe(). Can you 
include that change in your patch.

Regards,
Arend
Jacobe Zang July 30, 2024, 11:57 p.m. UTC | #2
>> WiFi modules often require 32kHz clock to function. Add support to
>> enable the clock to PCIe driver.
>>
>> Co-developed-by: Ondrej Jirman <megi@xff.cz>
>> Signed-off-by: Ondrej Jirman <megi@xff.cz>
>> Signed-off-by: Jacobe Zang <jacobe.zang@wesion.com>
>> ---
>>   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);
>> +     }
>> +
>>        if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
>>                return;
>
> This if-statement should be the first check in brcmf_of_probe(). Can you
> include that change in your patch.

Sure. I will change it ;-)


---
Best Regards
Jacobe
diff mbox series

Patch

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);
+	}
+
 	if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
 		return;