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MMC core:

Browse source 
- Fix/restore behaviour when selecting bus width for (e)MMC
 
 MMC host:
  - sunxi: Fix eMMC HS-DDR modes on Allwinner A80
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Merge tag 'mmc-v4.7-rc1-2' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix/restore behaviour when selecting bus width for (e)MMC

  MMC host:
   - sunxi: Fix eMMC HS-DDR modes on Allwinner A80"

* tag 'mmc-v4.7-rc1-2' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sunxi: Re-enable eMMC HS-DDR modes on Allwinner A80
  mmc: sunxi: Fix DDR MMC timings for A80
  mmc: fix mmc mode selection for HS-DDR and higher
This commit is contained in:
Linus Torvalds 2016-06-04 12:20:26 -07:00
commit 95b46aeb05
2 changed files with 4 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/mmc/core/mmc.c
View file

@ -1276,7 +1276,7 @@ static int mmc_select_hs200(struct mmc_card *card)
* switch to HS200 mode if bus width is set successfully.
*/
err = mmc_select_bus_width(card);
if (!err) {
if (err >= 0) {
val = EXT_CSD_TIMING_HS200 |
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@ -1583,7 +1583,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
} else if (mmc_card_hs(card)) {
/* Select the desired bus width optionally */
err = mmc_select_bus_width(card);
if (!err) {
if (err >= 0) {
err = mmc_select_hs_ddr(card);
if (err)
goto free_card;

9
drivers/mmc/host/sunxi-mmc.c
View file

@ -970,8 +970,8 @@ static const struct sunxi_mmc_clk_delay sun9i_mmc_clk_delays[] = {
[SDXC_CLK_400K] = { .output = 180, .sample = 180 },
[SDXC_CLK_25M] = { .output = 180, .sample = 75 },
[SDXC_CLK_50M] = { .output = 150, .sample = 120 },
[SDXC_CLK_50M_DDR] = { .output = 90, .sample = 120 },
[SDXC_CLK_50M_DDR_8BIT] = { .output = 90, .sample = 120 },
[SDXC_CLK_50M_DDR] = { .output = 54, .sample = 36 },
[SDXC_CLK_50M_DDR_8BIT] = { .output = 72, .sample = 72 },
};
static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
@ -1129,11 +1129,6 @@ static int sunxi_mmc_probe(struct platform_device *pdev)
MMC_CAP_1_8V_DDR |
MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ;
/* TODO MMC DDR is not working on A80 */
if (of_device_is_compatible(pdev->dev.of_node,
"allwinner,sun9i-a80-mmc"))
mmc->caps &= ~MMC_CAP_1_8V_DDR;
ret = mmc_of_parse(mmc);
if (ret)
goto error_free_dma;