drop old lcd_vk2c21 LCD driver that never worked; backport workingvinka,vk2c21 driver; fix Mekos DTs#482
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igorpecovnik merged 4 commits intoMay 17, 2026
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- this never worked, except for `123456` display on boot - was always built-in (not a module, and =y always) - This reverts commit 5e14078
- Original from armbian/build@5ee03af - backported from 7.0.y mainline version to 6.1.y - `.remove` returns void at 6.1.y The Vinka VK2C21 (and pin-compatible VK2C21A/VK2C21B) is a memory-mapping segment LCD controller that communicates over I2C. It can drive up to 128 segments (e.g. 32 SEG x 4 COM in 1/3 bias mode). Some SBCs wire this chip to GPIO pins without I2C pull-up resistors, making the standard i2c-gpio (open-drain) driver unusable. This driver therefore bit-bangs I2C in push-pull mode directly via GPIO, requiring no external pull-ups. Signed-off-by: Ricardo Pardini <ricardo@pardini.net>
…ave it - also eat trailing whitespace
- backported driver which works - also eat trailing whitespace
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- new LCD driver for the Meko-R58X-Pro as a module at armbian/linux-rockchip#482 - old always-built-in `lcd_vk2c21` is gone
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Armbian enablement of driver and simple systemd unit to drive the LCD as a simple HH-MM clock: armbian/build#9836 |
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Simple usage for testing is |
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- new LCD driver for the Meko-R58X-Pro as a module at armbian/linux-rockchip#482 - old always-built-in `lcd_vk2c21` is gone
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arm64: dts: meko-r58x-pro: switch lcd_vk2c21 to new vinka,vk2c21
arm64: dts: mekos: drop lcd_vk2c21 reference from boards that don't have it
auxdisplay: add a driver for Vinka VK2C21 Segment LCD Controller
.removereturns void at 6.1.yThe Vinka VK2C21 (and pin-compatible VK2C21A/VK2C21B) is a memory-mapping
segment LCD controller that communicates over I2C. It can drive up to
128 segments (e.g. 32 SEG x 4 COM in 1/3 bias mode).
Some SBCs wire this chip to GPIO pins without I2C pull-up
resistors, making the standard i2c-gpio (open-drain) driver unusable.
This driver therefore bit-bangs I2C in push-pull mode directly via GPIO,
requiring no external pull-ups.
drivers: char: drop "meko: vk2c21 LCD driver for the R58X-PRO"
123456display on boot