[PATCH v1] i2c: rk3x: Add support for SCL output enable debounce
Heiko Stübner
heiko at sntech.de
Sat Jan 3 02:39:40 PST 2026
Am Samstag, 3. Januar 2026, 06:25:04 Mitteleuropäische Normalzeit schrieb Anand Moon:
> From: David Wu <david.wu at rock-chips.com>
>
> As per the RK3399 and RK3588 datasheets Rockchip I2C controllers feature
> a SCL_OE_DB register (0x24). This register is used to configure the
> debounce time for the SCL output enable signal, which helps prevent
> glitches and ensures timing compliance during bus handover or slave clock
> stretching.
>
> Introduce a 'has_scl_oe_debounce' flag to rk3x_i2c_soc_data to
> distinguish between hardware versions. For supported SoCs, calculate
> the debounce counter dynamically based on the current clock rate
> and program it during divider adaptation.
>
> Signed-off-by: Anand Moon <linux.amoon at gmail.com>
> Signed-off-by: David Wu <david.wu at rock-chips.com>
Signed-off-by lines are in the wrong order.
Original author first, then yours as you're the one handling
the patch last.
Also, does this fix a problem for you, or is this more a case of
"this looks useful"?
Thanks
Heiko
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