diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/046-0007-ARM-BCM5301X-Set-5-GHz-wireless-frequency-limits-on-.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.4/046-0007-ARM-BCM5301X-Set-5-GHz-wireless-frequency-limits-on-.patch | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/046-0007-ARM-BCM5301X-Set-5-GHz-wireless-frequency-limits-on-.patch b/target/linux/bcm53xx/patches-4.4/046-0007-ARM-BCM5301X-Set-5-GHz-wireless-frequency-limits-on-.patch new file mode 100644 index 0000000000..7debd03af2 --- /dev/null +++ b/target/linux/bcm53xx/patches-4.4/046-0007-ARM-BCM5301X-Set-5-GHz-wireless-frequency-limits-on-.patch @@ -0,0 +1,126 @@ +From d3af86018715ebb19f4111f80e545405b208f09b Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Sat, 14 Jan 2017 00:58:57 +0100 +Subject: [PATCH] ARM: BCM5301X: Set 5 GHz wireless frequency limits on Netgear + R8000 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Netgear R8000 is a tri-band home router. It has three BCM43602 chipsets +two of them for 5 GHz band. Both seem the same and their firmwares +report the same set of channels. The problem is due to hardware / board +design there are extra limitations that should be respected. + +First PHY should be used for U-NII-2 and U-NII-3. Third PHY should be +used for U-NII-1. Using them in a different way may result in wireless +not working or in noticeably reduced performance. Basic version of this +info was provided by Broadcom employee, then it has been verified by me +using original vendor firmware (which has limitations hardcoded in UI). + +This patch uses recently introduced ieee80211-freq-limit property to +describe these limitations at DT level. + +Referencing PCIe devices in DT required specifying all related bridges. +Below you can see (a bit complex) PCI tree from R8000 that explains all +entries that I needed to put in DT. + +0000:00:00.0 14e4:8012 Bridge Device +└─ 0000:01:00.0 14e4:aa52 Network Controller + +0001:00:00.0 14e4:8012 Bridge Device +└─ 0001:01:00.0 10b5:8603 Bridge Device + ├─ 0001:02:01.0 10b5:8603 Bridge Device + │ └─ 0001:03:00.0 14e4:aa52 Network Controller + ├─ 0001:02:02.0 10b5:8603 Bridge Device + │ └─ 0001:04:00.0 14e4:aa52 Network Controller + ├─ 0001:02:03.0 000d:0000 0x000000 + ├─ 0001:02:04.0 000d:0000 0x000000 + ├─ 0001:02:05.0 000d:0000 0x000000 + ├─ 0001:02:06.0 000d:0000 0x000000 + ├─ (...) + ├─ 0001:02:1d.0 000d:0000 0x000000 + ├─ 0001:02:1e.0 000d:0000 0x000000 + └─ 0001:02:1f.0 000d:0000 0x000000 + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> +--- + arch/arm/boot/dts/bcm4709-netgear-r8000.dts | 48 +++++++++++++++++++++++++++++ + arch/arm/boot/dts/bcm5301x.dtsi | 8 +++++ + 2 files changed, 56 insertions(+) + +--- a/arch/arm/boot/dts/bcm4709-netgear-r8000.dts ++++ b/arch/arm/boot/dts/bcm4709-netgear-r8000.dts +@@ -108,6 +108,54 @@ + }; + }; + ++&pcie0 { ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ++ bridge@0,0,0 { ++ reg = <0x0000 0 0 0 0>; ++ ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ++ wifi@0,1,0 { ++ reg = <0x0000 0 0 0 0>; ++ ieee80211-freq-limit = <5735000 5835000>; ++ }; ++ }; ++}; ++ ++&pcie1 { ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ++ bridge@1,0,0 { ++ reg = <0x0000 0 0 0 0>; ++ ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ++ bridge@1,1,0 { ++ reg = <0x0000 0 0 0 0>; ++ ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ++ bridge@1,2,2 { ++ reg = <0x1000 0 0 0 0>; ++ ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ++ wifi@1,4,0 { ++ reg = <0x0000 0 0 0 0>; ++ ieee80211-freq-limit = <5170000 5730000>; ++ }; ++ }; ++ }; ++ }; ++}; ++ + &usb2 { + vcc-gpio = <&chipcommon 0 GPIO_ACTIVE_HIGH>; + }; +--- a/arch/arm/boot/dts/bcm5301x.dtsi ++++ b/arch/arm/boot/dts/bcm5301x.dtsi +@@ -243,6 +243,14 @@ + #gpio-cells = <2>; + }; + ++ pcie0: pcie@12000 { ++ reg = <0x00012000 0x1000>; ++ }; ++ ++ pcie1: pcie@13000 { ++ reg = <0x00013000 0x1000>; ++ }; ++ + usb2: usb2@21000 { + reg = <0x00021000 0x1000>; + |