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@@ -0,0 +1,35 @@
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+From: Matthias Schiffer <mschiffer@universe-factory.net>
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+Date: Tue, 30 Aug 2016 12:27:15 +0200
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+Subject: ar71xx/cpe510: enable LNA for CPE210/220/510/520
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+
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+The LNA improves the rx path. Within a simple test setup
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+it improved the signal from -60dbm to -40dbm.
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+
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+Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
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+
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+Backport of LEDE 94e23bf7409d6cc4c9efb55ed32aba8e5a497966
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+
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+diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
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+index 8bf5c0f..5cb052a 100644
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+--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
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++++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-cpe510.c
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+@@ -30,6 +30,9 @@
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+ #define CPE510_GPIO_LED_L3 15
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+ #define CPE510_GPIO_LED_L4 16
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+
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++#define CPE510_GPIO_EXTERNAL_LNA0 18
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++#define CPE510_GPIO_EXTERNAL_LNA1 19
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++
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+ #define CPE510_GPIO_BTN_RESET 4
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+
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+ #define CPE510_KEYS_POLL_INTERVAL 20 /* msecs */
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+@@ -93,6 +96,9 @@ static void __init cpe510_setup(void)
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+ ARRAY_SIZE(cpe510_gpio_keys),
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+ cpe510_gpio_keys);
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+
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++ ath79_wmac_set_ext_lna_gpio(0, CPE510_GPIO_EXTERNAL_LNA0);
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++ ath79_wmac_set_ext_lna_gpio(1, CPE510_GPIO_EXTERNAL_LNA1);
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++
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+ ath79_register_m25p80(NULL);
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+
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+ ath79_register_mdio(1, 0);
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