From: Kuibao Zhang <kuibao.zhang@amlogic.com>
Date: Wed, 8 May 2019 08:26:26 +0000 (+0800)
Subject: BT: support rtl8761atv [1/1]
X-Git-Tag: hardkernel-4.9.236-104~1283
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=82276b1171568a7b3233f53b9fb32cfc9ba22c55;p=platform%2Fkernel%2Flinux-amlogic.git

BT: support rtl8761atv [1/1]

PD#OTT-2730

Problem:
    1.BT open fail;
    2.the problem is caused by Flow Control;

Solution:
    1.set host cts pull-down as default on the dts.

Verify:
    Galilei.

Change-Id: I42aa3bfa263d4330219268622bce94bfc24ced8a
Signed-off-by: Kuibao Zhang <kuibao.zhang@amlogic.com>
---

diff --git a/arch/arm/boot/dts/amlogic/mesong12b.dtsi b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
index d8de340..c3ebcc9 100644
--- a/arch/arm/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
@@ -2499,10 +2499,14 @@
 		mux {
 			groups = "uart_tx_a",
 				"uart_rx_a",
-				"uart_cts_a",
 				"uart_rts_a";
 			function = "uart_a";
 		};
+		mux1 {
+			groups = "uart_cts_a";
+			function = "uart_a";
+			bias-pull-down;
+		};
 	};
 
 	b_uart_pins:b_uart {
diff --git a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
index 7b760b7..880ffac 100644
--- a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
@@ -2499,10 +2499,14 @@
 		mux {
 			groups = "uart_tx_a",
 				"uart_rx_a",
-				"uart_cts_a",
 				"uart_rts_a";
 			function = "uart_a";
 		};
+		mux1 {
+			groups = "uart_cts_a";
+			function = "uart_a";
+			bias-pull-down;
+		};
 	};
 
 	b_uart_pins:b_uart {