From: Michael Walle <michael@walle.cc>
To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>, Michael Walle <michael@walle.cc>,
Michal Simek <michal.simek@xilinx.com>,
soc@kernel.org, Rob Herring <robh+dt@kernel.org>,
Olof Johansson <olof@lixom.net>
Subject: [PATCH 3/3] ARM: dts: add Ebang EBAZ4205 device tree
Date: Wed, 20 Jan 2021 20:40:33 +0100 [thread overview]
Message-ID: <20210120194033.26970-4-michael@walle.cc> (raw)
In-Reply-To: <20210120194033.26970-1-michael@walle.cc>
The Ebang EBAZ4205 is a simple board based on the Xilinx Zynq-7000 SoC.
Its features are:
- one serial port
- 256 MB RAM
- 128 MB NAND flash
- SDcard slot
- IP101GA 10/100 Mbit Ethernet PHY (connected to PL IOs)
- two LEDs (connected to PL IOs)
- one Push Button (connect to PL IOs)
- (optional) RTC
- (optional) Input voltage supervisor
The NAND flash is not supported in mainline linux yet. Unfortunately,
the PHY is connected via the PL, thus for working ethernet the FPGA has
to be configured. Also, depending on the board variant, the PHY has no
external crystal and its clock needs to be driven by the PL. FCLK3 is
used for this and is kept enabled.
Signed-off-by: Michael Walle <michael@walle.cc>
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/zynq-ebaz4205.dts | 109 ++++++++++++++++++++++++++++
2 files changed, 110 insertions(+)
create mode 100644 arch/arm/boot/dts/zynq-ebaz4205.dts
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index bf80fd901f61..03ac2e665241 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1312,6 +1312,7 @@ dtb-$(CONFIG_ARCH_VT8500) += \
wm8850-w70v2.dtb
dtb-$(CONFIG_ARCH_ZYNQ) += \
zynq-cc108.dtb \
+ zynq-ebaz4205.dtb \
zynq-microzed.dtb \
zynq-parallella.dtb \
zynq-zc702.dtb \
diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
new file mode 100644
index 000000000000..e802d4ae8804
--- /dev/null
+++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Michael Walle <michael@walle.cc>
+ */
+/dts-v1/;
+/include/ "zynq-7000.dtsi"
+
+/ {
+ model = "Ebang EBAZ4205";
+ compatible = "ebang,ebaz4205", "xlnx,zynq-7000";
+
+ aliases {
+ ethernet0 = &gem0;
+ serial0 = &uart1;
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x0 0x10000000>;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+};
+
+&clkc {
+ ps-clk-frequency = <33333333>;
+ fclk-enable = <8>;
+};
+
+&gem0 {
+ status = "okay";
+ phy-mode = "mii";
+ phy-handle = <&phy>;
+
+ /* PHY clock */
+ assigned-clocks = <&clkc 18>;
+ assigned-clock-rates = <25000000>;
+
+ phy: ethernet-phy@0 {
+ reg = <0>;
+ };
+};
+
+&pinctrl0 {
+ pinctrl_sdhci0_default: sdhci0-default {
+ mux {
+ groups = "sdio0_2_grp";
+ function = "sdio0";
+ };
+
+ conf {
+ groups = "sdio0_2_grp";
+ io-standard = <3>;
+ slew-rate = <0>;
+ bias-disable;
+ };
+
+ mux-cd {
+ groups = "gpio0_34_grp";
+ function = "sdio0_cd";
+ };
+
+ conf-cd {
+ groups = "gpio0_34_grp";
+ io-standard = <3>;
+ slew-rate = <0>;
+ bias-high-impedance;
+ bias-pull-up;
+ };
+ };
+
+ pinctrl_uart1_default: uart1-default {
+ mux {
+ groups = "uart1_4_grp";
+ function = "uart1";
+ };
+
+ conf {
+ groups = "uart1_4_grp";
+ io-standard = <3>;
+ slew-rate = <0>;
+ };
+
+ conf-rx {
+ pins = "MIO25";
+ bias-high-impedance;
+ };
+
+ conf-tx {
+ pins = "MIO24";
+ bias-disable;
+ };
+ };
+};
+
+&sdhci0 {
+ status = "okay";
+ disable-wp;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_sdhci0_default>;
+};
+
+&uart1 {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1_default>;
+};
--
2.20.1
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next prev parent reply other threads:[~2021-01-20 19:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 19:40 [PATCH 0/3] add Ebang EBAZ4205 support Michael Walle
2021-01-20 19:40 ` [PATCH 1/3] dt-bindings: add ebang vendor prefix Michael Walle
2021-02-09 2:32 ` Rob Herring
2021-01-20 19:40 ` [PATCH 2/3] dt-bindings: arm: add Ebang EBAZ4205 board Michael Walle
2021-01-20 19:40 ` Michael Walle [this message]
2021-01-21 9:25 ` [PATCH 0/3] add Ebang EBAZ4205 support Michal Simek
2021-01-21 9:35 ` Michael Walle
2021-01-21 9:57 ` Michal Simek
2021-01-21 10:13 ` Michael Walle
2021-01-21 10:23 ` Michal Simek
2021-01-21 10:41 ` Michael Walle
2021-01-21 13:16 ` Michal Simek
2021-01-21 15:14 ` Michael Walle
2021-01-26 13:31 ` Michal Simek
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