* [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector
@ 2025-01-27 6:57 Daniel Schultz
2025-01-27 17:24 ` Krzysztof Kozlowski
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Schultz @ 2025-01-27 6:57 UTC (permalink / raw)
To: nm, vigneshr, kristo, robh, krzk+dt, conor+dt, linux-arm-kernel,
devicetree, linux-kernel
Cc: w.egorov, upstream, Daniel Schultz
Add a device tree overlay for SPI1 (spidev), UART3 and GPIO1 on
X27 connector.
By default, not all interfaces on the X27 connector are accessible
due to being disabled or set to alternative pin mux configurations.
This overlay activates and configures these interfaces to support
connections with external devices.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
---
arch/arm64/boot/dts/ti/Makefile | 3 +
...phyboard-electra-x27-gpio1-spi1-uart3.dtso | 69 +++++++++++++++++++
2 files changed, 72 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso
diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index f71360f14f23..a05c9c5612fc 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -58,6 +58,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-evm-nand.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-gpio-fan.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-pcie-usb2.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtbo
dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am642-tqma64xxl-mbax4xxl.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
@@ -186,6 +187,8 @@ k3-am642-phyboard-electra-gpio-fan-dtbs := \
k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-gpio-fan.dtbo
k3-am642-phyboard-electra-pcie-usb2-dtbs := \
k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-pcie-usb2.dtbo
+k3-am642-phyboard-electra-x27-gpio1-spi1-uart3-dtbs := \
+ k3-am642-phyboard-electra-rdk.dtb k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtbo
k3-am642-tqma64xxl-mbax4xxl-sdcard-dtbs := \
k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
k3-am642-tqma64xxl-mbax4xxl-wlan-dtbs := \
diff --git a/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso
new file mode 100644
index 000000000000..b80d8b6a4fc4
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-x27-gpio1-spi1-uart3.dtso
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ * Authors:
+ * Wadim Egorov <w.egorov@phytec.de>
+ * Daniel Schultz <d.schultz@phytec.de>
+ *
+ * GPIO, SPI and UART examples for the X27 expansion connector.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "k3-pinctrl.h"
+
+&{/} {
+ aliases {
+ serial5 = "/bus@f4000/serial@2830000";
+ };
+};
+
+&main_pmx0 {
+ main_gpio1_exp_header_gpio_pins_default: main-gpio1-exp-header-gpio-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0220, PIN_INPUT, 7) /* (D14) SPI1_CS1.GPIO1_48 */
+ >;
+ };
+
+ main_spi1_pins_default: main-spi1-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0224, PIN_INPUT, 0) /* (C14) SPI1_CLK */
+ AM64X_IOPAD(0x021C, PIN_OUTPUT, 0) /* (B14) SPI1_CS0 */
+ AM64X_IOPAD(0x0228, PIN_OUTPUT, 0) /* (B15) SPI1_D0 */
+ AM64X_IOPAD(0x022C, PIN_INPUT, 0) /* (A15) SPI1_D1 */
+ >;
+ };
+
+ main_uart3_pins_default: main-uart3-pins-default {
+ pinctrl-single,pins = <
+ AM64X_IOPAD(0x0048, PIN_INPUT, 2) /* (U20) GPMC0_AD3.UART3_RXD */
+ AM64X_IOPAD(0x004c, PIN_OUTPUT, 2) /* (U18) GPMC0_AD4.UART3_TXD */
+ >;
+ };
+};
+
+&main_gpio1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_gpio1_exp_header_gpio_pins_default>;
+ status = "okay";
+};
+
+&main_spi1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_spi1_pins_default>;
+ ti,pindir-d0-out-d1-in = <1>;
+ status = "okay";
+
+ spidev@0 {
+ compatible = "rohm,dh2228fv";
+ reg = <0>;
+ spi-max-frequency = <24000000>;
+ };
+};
+
+&main_uart3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_uart3_pins_default>;
+ status = "okay";
+};
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector
2025-01-27 6:57 [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector Daniel Schultz
@ 2025-01-27 17:24 ` Krzysztof Kozlowski
2025-01-28 8:43 ` Daniel Schultz
0 siblings, 1 reply; 4+ messages in thread
From: Krzysztof Kozlowski @ 2025-01-27 17:24 UTC (permalink / raw)
To: Daniel Schultz, nm, vigneshr, kristo, robh, krzk+dt, conor+dt,
linux-arm-kernel, devicetree, linux-kernel
Cc: w.egorov, upstream
On 27/01/2025 07:57, Daniel Schultz wrote:
> +&main_spi1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&main_spi1_pins_default>;
> + ti,pindir-d0-out-d1-in = <1>;
> + status = "okay";
> +
> + spidev@0 {
Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "rohm,dh2228fv";
That's not the device you have there. You cannot use other compatibles.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector
2025-01-27 17:24 ` Krzysztof Kozlowski
@ 2025-01-28 8:43 ` Daniel Schultz
2025-01-28 9:02 ` Krzysztof Kozlowski
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Schultz @ 2025-01-28 8:43 UTC (permalink / raw)
To: Krzysztof Kozlowski, nm@ti.com, vigneshr@ti.com,
kristo@kernel.org, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Wadim Egorov, upstream@lists.phytec.de
Hi,
On 27.01.25 18:24, Krzysztof Kozlowski wrote:
> On 27/01/2025 07:57, Daniel Schultz wrote:
>> +&main_spi1 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&main_spi1_pins_default>;
>> + ti,pindir-d0-out-d1-in = <1>;
>> + status = "okay";
>> +
>> + spidev@0 {
>
> Node names should be generic. See also an explanation and list of
> examples (not exhaustive) in DT specification:
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
>
>
>> + compatible = "rohm,dh2228fv";
>
> That's not the device you have there. You cannot use other compatibles.
I will remove that device for now and see if I can find a supported
device on Sparkfun or similar, which I can add later.
- Daniel
>
>
> Best regards,
> Krzysztof
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector
2025-01-28 8:43 ` Daniel Schultz
@ 2025-01-28 9:02 ` Krzysztof Kozlowski
0 siblings, 0 replies; 4+ messages in thread
From: Krzysztof Kozlowski @ 2025-01-28 9:02 UTC (permalink / raw)
To: Daniel Schultz, nm@ti.com, vigneshr@ti.com, kristo@kernel.org,
robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Wadim Egorov, upstream@lists.phytec.de
On 28/01/2025 09:43, Daniel Schultz wrote:
> Hi,
>
> On 27.01.25 18:24, Krzysztof Kozlowski wrote:
>> On 27/01/2025 07:57, Daniel Schultz wrote:
>>> +&main_spi1 {
>>> + pinctrl-names = "default";
>>> + pinctrl-0 = <&main_spi1_pins_default>;
>>> + ti,pindir-d0-out-d1-in = <1>;
>>> + status = "okay";
>>> +
>>> + spidev@0 {
>>
>> Node names should be generic. See also an explanation and list of
>> examples (not exhaustive) in DT specification:
>> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
>>
>>
>>> + compatible = "rohm,dh2228fv";
>>
>> That's not the device you have there. You cannot use other compatibles.
>
> I will remove that device for now and see if I can find a supported
> device on Sparkfun or similar, which I can add later.
This sounds like you do not have there any device, so this cannot be
represented in the DTS.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 4+ messages in thread
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2025-01-27 6:57 [PATCH] arm64: dts: ti: am64-phyboard-electra: Add DT overlay for X27 connector Daniel Schultz
2025-01-27 17:24 ` Krzysztof Kozlowski
2025-01-28 8:43 ` Daniel Schultz
2025-01-28 9:02 ` Krzysztof Kozlowski
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