From patchwork Mon Jun 29 09:47:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pragnesh Patel X-Patchwork-Id: 243075 List-Id: U-Boot discussion From: pragnesh.patel at sifive.com (Pragnesh Patel) Date: Mon, 29 Jun 2020 15:17:27 +0530 Subject: [PATCH 4/6] mmc: mmc_spi: Read R2 response for send status command - CMD13 In-Reply-To: <20200629094730.10051-1-pragnesh.patel@sifive.com> References: <20200629094730.10051-1-pragnesh.patel@sifive.com> Message-ID: <20200629094730.10051-5-pragnesh.patel@sifive.com> Send status command (CMD13) will send R1 response under SD mode but R2 response under SPI mode. R2 response is 2 bytes long, so read 2 bytes for mmc SPI mode Signed-off-by: Pragnesh Patel --- drivers/mmc/mmc_spi.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c index 18d36878ef..ee56de36ec 100644 --- a/drivers/mmc/mmc_spi.c +++ b/drivers/mmc/mmc_spi.c @@ -266,7 +266,7 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd, u8 *resp = NULL; u32 resp_size = 0; bool resp_match = false; - u8 resp8 = 0, resp40[5] = { 0 }, resp_match_value = 0; + u8 resp8 = 0, resp16[2] = { 0 }, resp40[5] = { 0 }, resp_match_value = 0; dm_spi_claim_bus(dev); @@ -291,6 +291,9 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd, resp_size = sizeof(resp40); break; case MMC_CMD_SEND_STATUS: + resp = (u8 *)&resp16[0]; + resp_size = sizeof(resp16); + break; case MMC_CMD_SET_BLOCKLEN: case MMC_CMD_SPI_CRC_ON_OFF: case MMC_CMD_STOP_TRANSMISSION: @@ -335,8 +338,10 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd, cmd->response[0] |= (uint)resp40[1] << 24; break; case MMC_CMD_SEND_STATUS: - cmd->response[0] = (resp8 & 0xff) ? - MMC_STATUS_ERROR : MMC_STATUS_RDY_FOR_DATA; + if (resp16[0] || resp16[1]) + cmd->response[0] = MMC_STATUS_ERROR; + else + cmd->response[0] = MMC_STATUS_RDY_FOR_DATA; break; case MMC_CMD_SEND_CID: case MMC_CMD_SEND_CSD: