Re: [PATCH] ARM: dts: stm32: Consistently enable internal pull-ups for SD bus

On 12/9/20 11:22 AM, Patrick DELAUNAY wrote: Hi, [...] @@ -1340,13 +1340,13 @@    ; /* SDMMC2_CMD */   slew-rate = <1>;   drive-push-pull; -    bias-disable; +    bias-pull-up;   };   pins2 {   pinmux = ; /* SD

Re: [PATCH] ARM: dts: stm32: Consistently enable internal pull-ups for SD bus

Hi Marek, On 12/9/20 11:11 AM, Patrick DELAUNAY wrote: From: Marek Vasut Sent: vendredi 9 octobre 2020 23:08 The default state of SD bus and clock line is logical HI. SD card IO is open-drain and pulls the bus lines LO. Always enable the SD bus pull ups to guarantee this behavior. Note that

[PATCH] ARM: dts: stm32: Consistently enable internal pull-ups for SD bus

The default state of SD bus and clock line is logical HI. SD card IO is open-drain and pulls the bus lines LO. Always enable the SD bus pull ups to guarantee this behavior. Note that on systems with bus voltage level shifter on the SD bus, the pull ups might also be built into the level shifter, ho