Re: [Qemu-devel] [PATCH v3 16/18] sdcard: add a 'uhs' property, update the OCR register ACCEPT_SWITCH_1V8 bit

[Philippe Mathieu-Daudé]

On 01/23/2018 12:30 AM, Philippe Mathieu-Daudé wrote:
> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
> ---
>  hw/sd/sd.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/hw/sd/sd.c b/hw/sd/sd.c
> index 27176ba33e..b3b6859bc4 100644
> --- a/hw/sd/sd.c
> +++ b/hw/sd/sd.c
> @@ -93,6 +93,7 @@ struct SDState {
>      /* Configurable properties */
>      BlockBackend *blk;
>      bool spi;
> +    uint8_t uhs_supported;
>  
>      uint32_t mode;    /* current card mode, one of SDCardModes */
>      int32_t state;    /* current card state, one of SDCardStates */
> @@ -289,6 +290,8 @@ static void sd_reset_ocr(SDState *sd)
>  {
>      /* All voltages OK */
>      sd->ocr = R_OCR_VDD_VOLTAGE_WIN_HI_MASK;
> +
> +    sd->ocr = FIELD_DP32(sd->ocr, OCR, ACCEPT_SWITCH_1V8, 
> !!sd->uhs_supported);

This patch has to go after this series #17 "sdcard: implement the UHS-I
SWITCH_FUNCTION entries (Spec v3)"

>  }
>  
>  static void sd_ocr_powerup(void *opaque)
> @@ -2107,6 +2110,7 @@ static Property sd_properties[] = {
>       * board to ensure that ssi transfers only occur when the chip select
>       * is asserted.  */
>      DEFINE_PROP_BOOL("spi", SDState, spi, false),
> +    DEFINE_PROP_UINT8("uhs", SDState, uhs_supported, UHS_NOT_SUPPORTED),
>      DEFINE_PROP_END_OF_LIST()
>  };
>  
>