* [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT
@ 2016-06-01 19:16 Rafał Miłecki
2016-06-01 19:21 ` Florian Fainelli
2016-06-01 20:07 ` [PATCH V2] " Rafał Miłecki
0 siblings, 2 replies; 6+ messages in thread
From: Rafał Miłecki @ 2016-06-01 19:16 UTC (permalink / raw)
To: linux-arm-kernel
Driver for Northstar USB 2.0 PHY was added in 4.7-rc1 by:
commit d3feb4067335 ("phy: bcm-ns-usb2: new driver for USB 2.0 PHY on
Northstar").
It should be used to let EHCI platform driver init PHY.
Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
---
arch/arm/boot/dts/bcm5301x.dtsi | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
index 7d4d29b..9300e19 100644
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -140,6 +140,22 @@
};
};
+ phys {
+ compatible = "simple-bus";
+ ranges = <0x00000000 0x18000000 0x00100000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ usb2_phy2: usb2-phy {
+ compatible = "brcm,ns-usb2-phy";
+ reg = <0x0000c000 0x1000>;
+ reg-names = "dmu";
+ #phy-cells = <0>;
+ clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
+ clock-names = "phy-ref-clk";
+ };
+ };
+
axi at 18000000 {
compatible = "brcm,bus-axi";
reg = <0x18000000 0x1000>;
@@ -217,6 +233,8 @@
#address-cells = <1>;
#size-cells = <1>;
+
+ phys = <&usb2_phy2>;
};
usb3: usb3 at 23000 {
--
1.8.4.5
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT
2016-06-01 19:16 [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT Rafał Miłecki
@ 2016-06-01 19:21 ` Florian Fainelli
2016-06-01 19:35 ` Rafał Miłecki
2016-06-01 20:07 ` [PATCH V2] " Rafał Miłecki
1 sibling, 1 reply; 6+ messages in thread
From: Florian Fainelli @ 2016-06-01 19:21 UTC (permalink / raw)
To: linux-arm-kernel
On 06/01/2016 12:16 PM, Rafa? Mi?ecki wrote:
> Driver for Northstar USB 2.0 PHY was added in 4.7-rc1 by:
> commit d3feb4067335 ("phy: bcm-ns-usb2: new driver for USB 2.0 PHY on
> Northstar").
> It should be used to let EHCI platform driver init PHY.
>
> Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
> ---
> arch/arm/boot/dts/bcm5301x.dtsi | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
> index 7d4d29b..9300e19 100644
> --- a/arch/arm/boot/dts/bcm5301x.dtsi
> +++ b/arch/arm/boot/dts/bcm5301x.dtsi
> @@ -140,6 +140,22 @@
> };
> };
>
> + phys {
> + compatible = "simple-bus";
> + ranges = <0x00000000 0x18000000 0x00100000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> +
> + usb2_phy2: usb2-phy {
> + compatible = "brcm,ns-usb2-phy";
> + reg = <0x0000c000 0x1000>;
> + reg-names = "dmu";
> + #phy-cells = <0>;
> + clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
> + clock-names = "phy-ref-clk";
> + };
You guys need to get everything straigthen up when it comes to busing
and child nodes for bcm53101x.dtsi, why do we need a "simple-bus" node
here which overlaps in part with the brcm-bus-axi node's range?
The more I look at BCMA and how it gets used for a non-external WLAN
card, and the less I am convinced it brings anything useful to the game,
quite the contrary...
> + };
> +
> axi at 18000000 {
> compatible = "brcm,bus-axi";
> reg = <0x18000000 0x1000>;
> @@ -217,6 +233,8 @@
>
> #address-cells = <1>;
> #size-cells = <1>;
> +
> + phys = <&usb2_phy2>;
> };
>
> usb3: usb3 at 23000 {
>
--
Florian
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT
2016-06-01 19:21 ` Florian Fainelli
@ 2016-06-01 19:35 ` Rafał Miłecki
2016-06-01 19:50 ` Florian Fainelli
0 siblings, 1 reply; 6+ messages in thread
From: Rafał Miłecki @ 2016-06-01 19:35 UTC (permalink / raw)
To: linux-arm-kernel
On 1 June 2016 at 21:21, Florian Fainelli <f.fainelli@gmail.com> wrote:
> On 06/01/2016 12:16 PM, Rafa? Mi?ecki wrote:
>> Driver for Northstar USB 2.0 PHY was added in 4.7-rc1 by:
>> commit d3feb4067335 ("phy: bcm-ns-usb2: new driver for USB 2.0 PHY on
>> Northstar").
>> It should be used to let EHCI platform driver init PHY.
>>
>> Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
>> ---
>> arch/arm/boot/dts/bcm5301x.dtsi | 18 ++++++++++++++++++
>> 1 file changed, 18 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
>> index 7d4d29b..9300e19 100644
>> --- a/arch/arm/boot/dts/bcm5301x.dtsi
>> +++ b/arch/arm/boot/dts/bcm5301x.dtsi
>> @@ -140,6 +140,22 @@
>> };
>> };
>>
>> + phys {
>> + compatible = "simple-bus";
>> + ranges = <0x00000000 0x18000000 0x00100000>;
>> + #address-cells = <1>;
>> + #size-cells = <1>;
>> +
>> + usb2_phy2: usb2-phy {
>> + compatible = "brcm,ns-usb2-phy";
>> + reg = <0x0000c000 0x1000>;
>> + reg-names = "dmu";
>> + #phy-cells = <0>;
>> + clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
>> + clock-names = "phy-ref-clk";
>> + };
>
> You guys need to get everything straigthen up when it comes to busing
> and child nodes for bcm53101x.dtsi, why do we need a "simple-bus" node
> here which overlaps in part with the brcm-bus-axi node's range?
I believed I'm making things cleaner by adding a separated node for
PHYs (in the future there will be also USB 3.0 PHY and probably a PCIe
PHY). I'm fine with placing this PHY node somewhere else if you think
it better fits there.
--
Rafa?
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT
2016-06-01 19:35 ` Rafał Miłecki
@ 2016-06-01 19:50 ` Florian Fainelli
0 siblings, 0 replies; 6+ messages in thread
From: Florian Fainelli @ 2016-06-01 19:50 UTC (permalink / raw)
To: linux-arm-kernel
On 06/01/2016 12:35 PM, Rafa? Mi?ecki wrote:
> On 1 June 2016 at 21:21, Florian Fainelli <f.fainelli@gmail.com> wrote:
>> On 06/01/2016 12:16 PM, Rafa? Mi?ecki wrote:
>>> Driver for Northstar USB 2.0 PHY was added in 4.7-rc1 by:
>>> commit d3feb4067335 ("phy: bcm-ns-usb2: new driver for USB 2.0 PHY on
>>> Northstar").
>>> It should be used to let EHCI platform driver init PHY.
>>>
>>> Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
>>> ---
>>> arch/arm/boot/dts/bcm5301x.dtsi | 18 ++++++++++++++++++
>>> 1 file changed, 18 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
>>> index 7d4d29b..9300e19 100644
>>> --- a/arch/arm/boot/dts/bcm5301x.dtsi
>>> +++ b/arch/arm/boot/dts/bcm5301x.dtsi
>>> @@ -140,6 +140,22 @@
>>> };
>>> };
>>>
>>> + phys {
>>> + compatible = "simple-bus";
>>> + ranges = <0x00000000 0x18000000 0x00100000>;
>>> + #address-cells = <1>;
>>> + #size-cells = <1>;
>>> +
>>> + usb2_phy2: usb2-phy {
>>> + compatible = "brcm,ns-usb2-phy";
>>> + reg = <0x0000c000 0x1000>;
>>> + reg-names = "dmu";
>>> + #phy-cells = <0>;
>>> + clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
>>> + clock-names = "phy-ref-clk";
>>> + };
>>
>> You guys need to get everything straigthen up when it comes to busing
>> and child nodes for bcm53101x.dtsi, why do we need a "simple-bus" node
>> here which overlaps in part with the brcm-bus-axi node's range?
>
> I believed I'm making things cleaner by adding a separated node for
> PHYs (in the future there will be also USB 3.0 PHY and probably a PCIe
> PHY). I'm fine with placing this PHY node somewhere else if you think
> it better fits there.
The intent looks good, but it seems to me (and the datasheet helps here
too) that extending the brcm,bus-axi node to cover a wider register
range size could allow you to put the different PHYs as child nodes of
that bus. That way even if the core is probed with BCMA you still have a
proper of_node refefence that your driver can use.
Maybe as a better immediate solution, something like the NAND controller
node would be more elegant, where it only consumes its register space
and not more?
--
Florian
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH V2] ARM: BCM5301X: Specify PHY of USB 2.0 in DT
2016-06-01 19:16 [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT Rafał Miłecki
2016-06-01 19:21 ` Florian Fainelli
@ 2016-06-01 20:07 ` Rafał Miłecki
2016-07-22 20:01 ` Florian Fainelli
1 sibling, 1 reply; 6+ messages in thread
From: Rafał Miłecki @ 2016-06-01 20:07 UTC (permalink / raw)
To: linux-arm-kernel
Driver for Northstar USB 2.0 PHY was added in 4.7-rc1 by:
commit d3feb4067335 ("phy: bcm-ns-usb2: new driver for USB 2.0 PHY on
Northstar").
It should be used to let EHCI platform driver init PHY.
Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
---
V2: Add usb2_phy as child of root node instead of adding separated phys
"simple-bus".
---
arch/arm/boot/dts/bcm5301x.dtsi | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
index 7d4d29b..142811d 100644
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -140,6 +140,15 @@
};
};
+ usb2_phy: usb2-phy {
+ compatible = "brcm,ns-usb2-phy";
+ reg = <0x1800c000 0x1000>;
+ reg-names = "dmu";
+ #phy-cells = <0>;
+ clocks = <&genpll BCM_NSP_GENPLL_USB_PHY_REF_CLK>;
+ clock-names = "phy-ref-clk";
+ };
+
axi at 18000000 {
compatible = "brcm,bus-axi";
reg = <0x18000000 0x1000>;
@@ -217,6 +226,8 @@
#address-cells = <1>;
#size-cells = <1>;
+
+ phys = <&usb2_phy>;
};
usb3: usb3 at 23000 {
--
1.8.4.5
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH V2] ARM: BCM5301X: Specify PHY of USB 2.0 in DT
2016-06-01 20:07 ` [PATCH V2] " Rafał Miłecki
@ 2016-07-22 20:01 ` Florian Fainelli
0 siblings, 0 replies; 6+ messages in thread
From: Florian Fainelli @ 2016-07-22 20:01 UTC (permalink / raw)
To: linux-arm-kernel
On 06/01/2016 01:07 PM, Rafa? Mi?ecki wrote:
> Driver for Northstar USB 2.0 PHY was added in 4.7-rc1 by:
> commit d3feb4067335 ("phy: bcm-ns-usb2: new driver for USB 2.0 PHY on
> Northstar").
> It should be used to let EHCI platform driver init PHY.
>
> Signed-off-by: Rafa? Mi?ecki <zajec5@gmail.com>
Applied, thanks
--
Florian
^ permalink raw reply [flat|nested] 6+ messages in thread
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2016-06-01 19:16 [PATCH] ARM: BCM5301X: Specify PHY of USB 2.0 in DT Rafał Miłecki
2016-06-01 19:21 ` Florian Fainelli
2016-06-01 19:35 ` Rafał Miłecki
2016-06-01 19:50 ` Florian Fainelli
2016-06-01 20:07 ` [PATCH V2] " Rafał Miłecki
2016-07-22 20:01 ` Florian Fainelli
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