[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <7ede7ca6-f8db-4b38-a1cc-8be3d0db7fae@gmail.com>
Date: Sun, 15 Sep 2024 10:45:51 -0400
From: Jesse Taube <mr.bossman075@...il.com>
To: Yixun Lan <dlan@...too.org>
Cc: Yangyu Chen <cyy@...self.name>, Jisheng Zhang <jszhang@...nel.org>,
Inochi Amaoto <inochiama@...look.com>, Icenowy Zheng <uwu@...nowy.me>,
Meng Zhang <zhangmeng.kevin@...cemit.com>, Meng Zhang
<kevin.z.m@...mail.com>, devicetree@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-gpio@...r.kernel.org, Yixun Lan <dlan@...too.org>,
Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
<conor+dt@...nel.org>, Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Conor Dooley <conor@...nel.org>
Subject: [PATCH v4 3/3] riscv: dts: spacemit: add pinctrl property to uart0 in
BPI-F3
Before pinctrl driver implemented, the uart0 controller reply on
bootloader for setting correct pin mux and configurations.
Now, let's add pinctrl property to uart0 of Bananapi-F3 board.
Signed-off-by: Yixun Lan <dlan@...too.org>
---
arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 3 +++
arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 20 ++++++++++++++++++++
arch/riscv/boot/dts/spacemit/k1.dtsi | 5 +++++
3 files changed, 28 insertions(+)
diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 023274189b492..bc88d4de25a62 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -4,6 +4,7 @@
*/
#include "k1.dtsi"
+#include "k1-pinctrl.dtsi"
/ {
model = "Banana Pi BPI-F3";
@@ -15,5 +16,7 @@ chosen {
};
&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_2_cfg>;
status = "okay";
};
diff --git a/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
new file mode 100644
index 0000000000000..a8eac5517f857
--- /dev/null
+++ b/arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+/*
+ * Copyright (c) 2024 Yixun Lan <dlan@...too.org>
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#define K1_PADCONF(pin, func) (((pin) << 16) | (func))
It would be nice to have a pinfunc header like
arch/arm/boot/dts/nxp/imx/imx7ulp-pinfunc.h.
It would reference and encode the data of "3.2 Pin Multiplex" in
https://developer.spacemit.com/documentation?token=An1vwTwKaigaXRkYfwmcznTXned
, the document you attached in the summary.
Otherwise,
Acked-by: Jesse Taube <Mr.Bossman075@...il.com>
+
+&pinctrl {
+ uart0_2_cfg: uart0-2-cfg {
+ uart0-2-pins {
+ pinmux = <K1_PADCONF(68, 2)>,
+ <K1_PADCONF(69, 2)>;
+
+ bias-pull-up = <0>;
+ drive-strength = <32>;
+ };
+ };
+};
diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi
b/arch/riscv/boot/dts/spacemit/k1.dtsi
index 0777bf9e01183..a2d5f7d4a942a 100644
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -416,6 +416,11 @@ uart9: serial@...17800 {
status = "disabled";
};
+ pinctrl: pinctrl@...1e000 {
+ compatible = "spacemit,k1-pinctrl";
+ reg = <0x0 0xd401e000 0x0 0x400>;
+ };
+
plic: interrupt-controller@...00000 {
compatible = "spacemit,k1-plic", "sifive,plic-1.0.0";
reg = <0x0 0xe0000000 0x0 0x4000000>;
--
2.45.2
Powered by blists - more mailing lists