[PATCH] Backport: enable LNA for CPE210

[Tim Niemeyer]

Hi Tobias

Danke fürs Fixen.

Am Donnerstag, den 27.10.2016, 13:22 +0200 schrieb Tobias Klaus:
> This patch massivly improves the wireless performance of CPE210
> 
> Signed-off-by: Tobias Klaus <tk+ff at meskal.net>
Reveiwed-by: Tim Niemeyer <tim at tn-x.org>
Tested-by: Tim Niemeyer <tim at tn-x.org>

Tim

> ---
>  ...-cpe510-enable-LNA-for-CPE210-220-510-520.patch | 40 ++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
>  create mode 100644 build_patches/openwrt/0005-ar71xx-cpe510-enable-LNA-for-CPE210-220-510-520.patch
> 
> diff --git a/build_patches/openwrt/0005-ar71xx-cpe510-enable-LNA-for-CPE210-220-510-520.patch b/build_patches/openwrt/0005-ar71xx-cpe510-enable-LNA-for-CPE210-220-510-520.patch
> new file mode 100644
> index 0000000..5f32936
> --- /dev/null
> +++ b/build_patches/openwrt/0005-ar71xx-cpe510-enable-LNA-for-CPE210-220-510-520.patch
> @@ -0,0 +1,40 @@
> +From 94e23bf7409d6cc4c9efb55ed32aba8e5a497966 Mon Sep 17 00:00:00 2001
> +From: Alexander Couzens <lynxis at fe80.eu>
> +Date: Fri, 20 May 2016 13:10:36 +0200
> +Subject: [PATCH] ar71xx/cpe510: enable LNA for CPE210/220/510/520
> +
> +The LNA improves the rx path. Within a simple test setup
> +it improved the signal from -60dbm to -40dbm.
> +
> +Signed-off-by: Alexander Couzens <lynxis at fe80.eu>
> +---
> + target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c | 6 ++++++
> + 1 file changed, 6 insertions(+)
> +
> +diff --git target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
> +index 8bf5c0f..5cb052a 100644
> +--- target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
> ++++ target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
> +@@ -30,6 +30,9 @@
> + #define CPE510_GPIO_LED_L3	15
> + #define CPE510_GPIO_LED_L4	16
> + 
> ++#define CPE510_GPIO_EXTERNAL_LNA0	18
> ++#define CPE510_GPIO_EXTERNAL_LNA1	19
> ++
> + #define CPE510_GPIO_BTN_RESET	4
> + 
> + #define CPE510_KEYS_POLL_INTERVAL	20 /* msecs */
> +@@ -93,6 +96,9 @@ static void __init cpe510_setup(void)
> + 					ARRAY_SIZE(cpe510_gpio_keys),
> + 					cpe510_gpio_keys);
> + 
> ++	ath79_wmac_set_ext_lna_gpio(0, CPE510_GPIO_EXTERNAL_LNA0);
> ++	ath79_wmac_set_ext_lna_gpio(1, CPE510_GPIO_EXTERNAL_LNA1);
> ++
> + 	ath79_register_m25p80(NULL);
> + 
> + 	ath79_register_mdio(1, 0);
> +-- 
> +2.10.1
> +
> -- 
> 2.10.1
> 

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