diff mbox series

[PULL,19/32] sdcard: fix the 'maximum data transfer rate' to 25MHz

Message ID 20180222152307.7499-20-peter.maydell@linaro.org
State Accepted
Commit d7ecb8675298fefdaea35f6d7a558e91ec0b4138
Headers show
Series target-arm queue | expand

Commit Message

Peter Maydell Feb. 22, 2018, 3:22 p.m. UTC 
From: Philippe Mathieu-Daudé <f4bug@amsat.org>


To comply with Spec v1.10 (and 2.00, 3.01):

. TRAN_SPEED

for current SD Memory Cards that field must be always 0_0110_010b (032h) which is
equal to 25MHz - the mandatory maximum operating frequency of SD Memory Card.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>

Message-id: 20180215221325.7611-4-f4bug@amsat.org
[PMM: fixed comment indent]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

---
 hw/sd/sd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.16.1
diff mbox series

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 110f2f1d0a..3526269dbe 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -357,7 +357,7 @@  static void sd_set_csd(SDState *sd, uint64_t size)
         sd->csd[0] = 0x00;	/* CSD structure */
         sd->csd[1] = 0x26;	/* Data read access-time-1 */
         sd->csd[2] = 0x00;	/* Data read access-time-2 */
-        sd->csd[3] = 0x5a;	/* Max. data transfer rate */
+        sd->csd[3] = 0x32;      /* Max. data transfer rate: 25 MHz */
         sd->csd[4] = 0x5f;	/* Card Command Classes */
         sd->csd[5] = 0x50 |	/* Max. read data block length */
             HWBLOCK_SHIFT;