[Qemu-devel] [PATCH v4 19/20] sdcard: add a 'uhs' property, update the OCR register ACCEPT_SWITCH_1V8 bit

[Philippe Mathieu-Daudé]

Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
 hw/sd/sd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index ada96f5574..b9429b06ca 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 */
@@ -292,6 +293,8 @@ static void sd_set_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);
 }
 
 static void sd_ocr_powerup(void *opaque)
@@ -2189,6 +2192,7 @@ 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()
 };
 
-- 
2.16.1