Re: [PATCH 0/8] Add generic overlay for MikroBUS addon boards
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From: Alexander Stein <hidden>
Date: 2024-09-13 10:05:17
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linux-devicetree, lkml, rust-for-linux
Hi, Am Mittwoch, 11. September 2024, 16:27:17 CEST schrieb Ayush Singh:
Hello all, This is an attempt to add MikroBUS addon support using the approach described by Grove connector patch series [0]. The patch series tests out 2 addon boards + pwm and GPIO on the MikroBUS connector. The boards used are GPS3 Click (for UART) [1] and Weather Click (for I2C) [2]. Additionally, I have tested relative GPIO numbering using devicetree nexus nodes [3]. The patch series does not attempt to do any dynamic discovery for 1-wire eeprom MikroBUS addon boards, nor does it provide any sysfs entry for board addition/removal. The connector driver might include them after the basic support is ironed out, but the existing patches for dynamic overlays work fine. [sniip]
To put it in a more abstract perspective, aren't you "just" defining some kind of connector with a fixed layout of pins and features? It's not really different to Arduino Shields and Raspberry Pi hats, no? Ignoring multi-purpose pins for GPIO or e.g. I2C, this is about matching the plugin module's pins to platform-specific on-board peripherals. Sticking the name to MikroBUS might be misleading, because this is AFAICT just a trademark for a specific connector pin layout. This concept could be applied for any kind of connector, where e.g. the I2C interface is mapped to i2c0 on one platform and to lpi2c5 on a different platform. Best regards, Alexander -- TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht München, HRB 105018 Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider http://www.tq-group.com/