Hi Subhash,
> -----Original Message----- > From: subha...@codeaurora.org [mailto:subha...@codeaurora.org] > Sent: Thursday, March 10, 2011 12:00 PM > To: Nath, Arindam; c...@laptop.org > Cc: zhangfei....@gmail.com; prak...@marvell.com; linux- > m...@vger.kernel.org; Su, Henry; Lu, Aaron; anath....@gmail.com > Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage > switch procedure > > > > > -----Original Message----- > > From: linux-mmc-ow...@vger.kernel.org [mailto:linux-mmc- > > ow...@vger.kernel.org] On Behalf Of subha...@codeaurora.org > > Sent: Wednesday, March 09, 2011 4:15 PM > > To: 'Arindam Nath'; c...@laptop.org > > Cc: zhangfei....@gmail.com; prak...@marvell.com; linux- > > m...@vger.kernel.org; henry...@amd.com; aaron...@amd.com; > > anath....@gmail.com > > Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage > > switch procedure > > > > +1. Looks good to me from sd3.0 spec. prospective. > > > > > -----Original Message----- > > > From: linux-mmc-ow...@vger.kernel.org [mailto:linux-mmc- > > > ow...@vger.kernel.org] On Behalf Of Arindam Nath > > > Sent: Friday, March 04, 2011 5:03 PM > > > To: c...@laptop.org > > > Cc: zhangfei....@gmail.com; prak...@marvell.com; > > > subha...@codeaurora.org; linux-mmc@vger.kernel.org; > henry...@amd.com; > > > aaron...@amd.com; anath....@gmail.com; Arindam Nath > > > Subject: [PATCH v2 02/12] mmc: sd: add support for signal voltage > > > switch procedure > > > > > > Host Controller v3.00 adds another Capabilities register. Apart > > > from other things, this new register indicates whether the Host > > > Controller supports SDR50, SDR104, and DDR50 UHS-I modes. The spec > > > doesn't mention about explicit support for SDR12 and SDR25 UHS-I > > > modes, so the Host Controller v3.00 should support them by default. > > > Also if the controller support SDR104 mode, it will also support > > > SDR50 mode as well. So depending on the host support, we set the > > > corresponding MMC_CAP_* flags. One more new register. Host Control2 > > > is added in v3.00, which is used during Signal Voltage Switch > > > procedure described below. > > > > > > Since as per v3.00 spec, UHS-I supported hosts should set S18R > > > to 1, we set S18R (bit 24) of OCR before sending ACMD41. We also > > > need to set XPC (bit 28) of OCR in case the host can supply >150mA. > > > This support is indicated by the Maximum Current Capabilities > > > register of the Host Controller. > > > > > > If the response of ACMD41 has both CCS and S18A set, we start the > > > signal voltage switch procedure, which if successfull, will switch > > > the card from 3.3V signalling to 1.8V signalling. Signal voltage > > > switch procedure adds support for a new command CMD11 in the > > > Physical Layer Spec v3.01. As part of this procedure, we need to > > > set 1.8V Signalling Enable (bit 3) of Host Control2 register, which > > > if remains set after 5ms, means the switch to 1.8V signalling is > > > successfull. Otherwise, we clear bit 24 of OCR and retry the > > > initialization sequence. > > > > > > Signed-off-by: Arindam Nath <arindam.n...@amd.com> > > > --- > > > drivers/mmc/core/sd.c | 37 ++++++++++- > > > drivers/mmc/core/sd_ops.c | 32 ++++++++++ > > > drivers/mmc/core/sd_ops.h | 1 + > > > drivers/mmc/host/sdhci.c | 148 > > > +++++++++++++++++++++++++++++++++++++++++---- > > > drivers/mmc/host/sdhci.h | 18 +++++- > > > include/linux/mmc/host.h | 10 +++ > > > include/linux/mmc/sd.h | 1 + > > > 7 files changed, 229 insertions(+), 18 deletions(-) > > > > > > diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c > > > index b3f8a3c..3e82599 100644 > > > --- a/drivers/mmc/core/sd.c > > > +++ b/drivers/mmc/core/sd.c > > > @@ -408,6 +408,7 @@ struct device_type sd_type = { > > > int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid) > > > { > > > int err; > > > + u32 rocr; > > > > > > /* > > > * Since we're changing the OCR value, we seem to > > > @@ -427,10 +428,25 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 > > > ocr, u32 *cid) > > > if (!err) > > > ocr |= 1 << 30; > > > > > > - err = mmc_send_app_op_cond(host, ocr, NULL); > > > + /* If the host can supply more than 150mA, XPC should be set to > > > 1. */ > > > + if (host->caps & (MMC_CAP_SET_XPC_330 | MMC_CAP_SET_XPC_300 | > > > + MMC_CAP_SET_XPC_180)) > > > + ocr |= 1 << 28; > > > + > > > + err = mmc_send_app_op_cond(host, ocr, &rocr); > > > if (err) > > > return err; > > > > > > + /* > > > + * In case CCS and S18A in the response is set, start Signal > > > Voltage > > > + * Switch procedure. SPI mode doesn't support CMD11. > > > + */ > > > + if (!mmc_host_is_spi(host) && (rocr & 0x41000000)) { > > > + err = mmc_start_voltage_switch(host); > > > + if (err) > > > + return err; > > > + } > > > + > > > if (mmc_host_is_spi(host)) > > > err = mmc_send_cid(host, cid); > > > else > > > @@ -827,11 +843,26 @@ int mmc_attach_sd(struct mmc_host *host) > > > } > > > > > > /* > > > + * If the host supports one of UHS-I modes, request the card > > > + * to switch to 1.8V signaling level. > > > + */ > > > + if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | > > > + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)) > > > + host->ocr |= (1 << 24); > > > + > > > + /* > > > * Detect and init the card. > > > */ > > > err = mmc_sd_init_card(host, host->ocr, NULL); > > > - if (err) > > > - goto err; > > > + if (err == -EAGAIN) { > > > + /* > > > + * Retry initialization with S18R set to 0. > > > + */ > > > + host->ocr &= ~(1 << 24); > > > + err = mmc_sd_init_card(host, host->ocr, NULL); > > > + if (err) > > > + goto err; > > > + } > > Just a thought. Shouldn't we do setting of this b24 bit of OCR in > mmc_sd_get_cid() function itself and if mmc_send_app_op_cond() returns > error > then reset b24 bit and retry mmc_send_app_op_cond() command. This makes sense as per the spec. I will change it. Thanks, Arindam > > > > > > > > mmc_release_host(host); > > > err = mmc_add_card(host->card); > > > diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c > > > index 797cdb5..8a23e2e 100644 > > > --- a/drivers/mmc/core/sd_ops.c > > > +++ b/drivers/mmc/core/sd_ops.c > > > @@ -146,6 +146,38 @@ int mmc_app_set_bus_width(struct mmc_card > *card, > > > int width) > > > return 0; > > > } > > > > > > +int mmc_start_voltage_switch(struct mmc_host *host) > > > +{ > > > + struct mmc_command cmd; > > > + int err; > > > + > > > + BUG_ON(!host); > > > + > > > + /* > > > + * If the host does not provide signal voltage switch procedure, > > > we > > > + * set S18R to 0, and then retry initialization sequence. > > > + */ > > > + if (!host->ops->start_signal_voltage_switch) > > > + return -EAGAIN; > > > + > > > + memset(&cmd, 0, sizeof(struct mmc_command)); > > > + > > > + cmd.opcode = SD_SWITCH_VOLTAGE; > > > + cmd.arg = 0; > > > + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; > > > + > > > + err = mmc_wait_for_cmd(host, &cmd, 0); > > > + if (err) > > > + return err; > > > + > > > + if (!mmc_host_is_spi(host) && (cmd.resp[0] & R1_ERROR)) > > > + return -EIO; > > > + > > > + err = host->ops->start_signal_voltage_switch(host); > > > + > > > + return err; > > > +} > > > + > > > int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 > *rocr) > > > { > > > struct mmc_command cmd; > > > diff --git a/drivers/mmc/core/sd_ops.h b/drivers/mmc/core/sd_ops.h > > > index ffc2305..3cfba59 100644 > > > --- a/drivers/mmc/core/sd_ops.h > > > +++ b/drivers/mmc/core/sd_ops.h > > > @@ -20,6 +20,7 @@ int mmc_app_send_scr(struct mmc_card *card, u32 > > > *scr); > > > int mmc_sd_switch(struct mmc_card *card, int mode, int group, > > > u8 value, u8 *resp); > > > int mmc_app_sd_status(struct mmc_card *card, void *ssr); > > > +int mmc_start_voltage_switch(struct mmc_host *host); > > > > > > #endif > > > > > > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c > > > index 8914a25..5487a0b 100644 > > > --- a/drivers/mmc/host/sdhci.c > > > +++ b/drivers/mmc/host/sdhci.c > > > @@ -85,6 +85,8 @@ static void sdhci_dumpregs(struct sdhci_host > *host) > > > printk(KERN_DEBUG DRIVER_NAME ": Cmd: 0x%08x | Max curr: > > > 0x%08x\n", > > > sdhci_readw(host, SDHCI_COMMAND), > > > sdhci_readl(host, SDHCI_MAX_CURRENT)); > > > + printk(KERN_DEBUG DRIVER_NAME ": Host ctl2: 0x%08x\n", > > > + sdhci_readw(host, SDHCI_HOST_CONTROL2)); > > > > > > if (host->flags & SDHCI_USE_ADMA) > > > printk(KERN_DEBUG DRIVER_NAME ": ADMA Err: 0x%08x | ADMA > > > Ptr: 0x%08x\n", > > > @@ -1337,11 +1339,70 @@ out: > > > spin_unlock_irqrestore(&host->lock, flags); > > > } > > > > > > +static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc) > > > +{ > > > + struct sdhci_host *host; > > > + u8 pwr; > > > + u16 clk, ctrl; > > > + u32 present_state; > > > + > > > + host = mmc_priv(mmc); > > > + > > > + /* Stop SDCLK */ > > > + host = mmc_priv(mmc); > > > + clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); > > > + clk &= ~SDHCI_CLOCK_CARD_EN; > > > + sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); > > > + > > > + /* Check whether DAT[3:0] is 0000 */ > > > + present_state = sdhci_readl(host, SDHCI_PRESENT_STATE); > > > + if (!((present_state & SDHCI_DATA_LVL_MASK) >> > > > SDHCI_DATA_LVL_SHIFT)) { > > > + /* Enable 1.8V Signal Enable in the Host Control2 register > > > */ > > > + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); > > > + ctrl |= SDHCI_CTRL_VDD_180; > > > + sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2); > > > + > > > + /* Wait for 5ms */ > > > + usleep_range(5000, 5500); > > > + > > > + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); > > > + if (ctrl & SDHCI_CTRL_VDD_180) { > > > + /* Provide SDCLK again and wait for 1ms*/ > > > + clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); > > > + clk |= SDHCI_CLOCK_CARD_EN; > > > + sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); > > > + usleep_range(1000, 1500); > > > + > > > + /* > > > + * If DAT[3:0] level is 1111b, then the card was > > > + * successfully switched to 1.8V signaling. > > > + */ > > > + present_state = sdhci_readl(host, > > > SDHCI_PRESENT_STATE); > > > + if ((present_state & SDHCI_DATA_LVL_MASK) == > > > + SDHCI_DATA_LVL_MASK) { > > > + return 0; > > > + } > > > + } > > > + } > > > + > > > + /* > > > + * If we are here, that means the switch to 1.8V signaling > > > failed. Stop > > > + * power to the card, and retry initialization sequence by > > > setting S18R > > > + * to 0. > > > + */ > > > + pwr = sdhci_readb(host, SDHCI_POWER_CONTROL); > > > + pwr &= ~SDHCI_POWER_ON; > > > + sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); > > > + > > > + return -EAGAIN; > > > +} > > > + > > > static const struct mmc_host_ops sdhci_ops = { > > > .request = sdhci_request, > > > .set_ios = sdhci_set_ios, > > > .get_ro = sdhci_get_ro, > > > .enable_sdio_irq = sdhci_enable_sdio_irq, > > > + .start_signal_voltage_switch = > > > sdhci_start_signal_voltage_switch, > > > }; > > > > > > > > > > > > /********************************************************************** > > > *******\ > > > @@ -1799,7 +1860,9 @@ EXPORT_SYMBOL_GPL(sdhci_alloc_host); > > > int sdhci_add_host(struct sdhci_host *host) > > > { > > > struct mmc_host *mmc; > > > - unsigned int caps, ocr_avail; > > > + u32 caps[2]; > > > + u32 max_current_caps; > > > + unsigned int ocr_avail; > > > int ret; > > > > > > WARN_ON(host == NULL); > > > @@ -1822,12 +1885,15 @@ int sdhci_add_host(struct sdhci_host *host) > > > host->version); > > > } > > > > > > - caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps : > > > + caps[0] = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps > > > : > > > sdhci_readl(host, SDHCI_CAPABILITIES); > > > > > > + if (host->version >= SDHCI_SPEC_300) > > > + caps[1] = sdhci_readl(host, SDHCI_CAPABILITIES_1); > > > + > > > if (host->quirks & SDHCI_QUIRK_FORCE_DMA) > > > host->flags |= SDHCI_USE_SDMA; > > > - else if (!(caps & SDHCI_CAN_DO_SDMA)) > > > + else if (!(caps[0] & SDHCI_CAN_DO_SDMA)) > > > DBG("Controller doesn't have SDMA capability\n"); > > > else > > > host->flags |= SDHCI_USE_SDMA; > > > @@ -1838,7 +1904,8 @@ int sdhci_add_host(struct sdhci_host *host) > > > host->flags &= ~SDHCI_USE_SDMA; > > > } > > > > > > - if ((host->version >= SDHCI_SPEC_200) && (caps & > > > SDHCI_CAN_DO_ADMA2)) > > > + if ((host->version >= SDHCI_SPEC_200) && > > > + (caps[0] & SDHCI_CAN_DO_ADMA2)) > > > host->flags |= SDHCI_USE_ADMA; > > > > > > if ((host->quirks & SDHCI_QUIRK_BROKEN_ADMA) && > > > @@ -1892,10 +1959,10 @@ int sdhci_add_host(struct sdhci_host *host) > > > } > > > > > > if (host->version >= SDHCI_SPEC_300) > > > - host->max_clk = (caps & SDHCI_CLOCK_V3_BASE_MASK) > > > + host->max_clk = (caps[0] & SDHCI_CLOCK_V3_BASE_MASK) > > > >> SDHCI_CLOCK_BASE_SHIFT; > > > else > > > - host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) > > > + host->max_clk = (caps[0] & SDHCI_CLOCK_BASE_MASK) > > > >> SDHCI_CLOCK_BASE_SHIFT; > > > > > > host->max_clk *= 1000000; > > > @@ -1911,7 +1978,7 @@ int sdhci_add_host(struct sdhci_host *host) > > > } > > > > > > host->timeout_clk = > > > - (caps & SDHCI_TIMEOUT_CLK_MASK) >> SDHCI_TIMEOUT_CLK_SHIFT; > > > + (caps[0] & SDHCI_TIMEOUT_CLK_MASK) >> > > > SDHCI_TIMEOUT_CLK_SHIFT; > > > if (host->timeout_clk == 0) { > > > if (host->ops->get_timeout_clock) { > > > host->timeout_clk = host->ops- > > > >get_timeout_clock(host); > > > @@ -1923,7 +1990,7 @@ int sdhci_add_host(struct sdhci_host *host) > > > return -ENODEV; > > > } > > > } > > > - if (caps & SDHCI_TIMEOUT_CLK_UNIT) > > > + if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) > > > host->timeout_clk *= 1000; > > > > > > /* > > > @@ -1950,21 +2017,76 @@ int sdhci_add_host(struct sdhci_host *host) > > > if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA)) > > > mmc->caps |= MMC_CAP_4_BIT_DATA; > > > > > > - if (caps & SDHCI_CAN_DO_HISPD) > > > + if (caps[0] & SDHCI_CAN_DO_HISPD) > > > mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; > > > > > > if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) && > > > mmc_card_is_removable(mmc)) > > > mmc->caps |= MMC_CAP_NEEDS_POLL; > > > > > > + /* UHS-I mode(s) supported by the host controller. */ > > > + if (host->version >= SDHCI_SPEC_300) > > > + mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; > > > + > > > + /* SDR104 supports also implies SDR50 support */ > > > + if (caps[1] & SDHCI_SUPPORT_SDR104) > > > + mmc->caps |= MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_SDR50; > > > + else if (caps[1] & SDHCI_SUPPORT_SDR50) > > > + mmc->caps |= MMC_CAP_UHS_SDR50; > > > + > > > + if (caps[1] & SDHCI_SUPPORT_DDR50) > > > + mmc->caps |= MMC_CAP_UHS_DDR50; > > > + > > > ocr_avail = 0; > > > - if (caps & SDHCI_CAN_VDD_330) > > > + /* > > > + * According to SD Host Controller spec v3.00, if the Host System > > > + * can afford more than 150mA, Host Driver should set XPC to 1. > > > Also > > > + * the value is meaningful only if Voltage Support in the > > > Capabilities > > > + * register is set. The actual current value is 4 times the > > > register > > > + * value. > > > + */ > > > + max_current_caps = sdhci_readl(host, SDHCI_MAX_CURRENT); > > > + > > > + if (caps[0] & SDHCI_CAN_VDD_330) { > > > + int max_current_330; > > > + > > > ocr_avail |= MMC_VDD_32_33 | MMC_VDD_33_34; > > > - if (caps & SDHCI_CAN_VDD_300) > > > + > > > + max_current_330 = ((max_current_caps & > > > + SDHCI_MAX_CURRENT_330_MASK) >> > > > + SDHCI_MAX_CURRENT_330_SHIFT) * > > > + SDHCI_MAX_CURRENT_MULTIPLIER; > > > + > > > + if (max_current_330 > 150) > > > + mmc->caps |= MMC_CAP_SET_XPC_330; > > > + } > > > + if (caps[0] & SDHCI_CAN_VDD_300) { > > > + int max_current_300; > > > + > > > ocr_avail |= MMC_VDD_29_30 | MMC_VDD_30_31; > > > - if (caps & SDHCI_CAN_VDD_180) > > > + > > > + max_current_300 = ((max_current_caps & > > > + SDHCI_MAX_CURRENT_300_MASK) >> > > > + SDHCI_MAX_CURRENT_300_SHIFT) * > > > + SDHCI_MAX_CURRENT_MULTIPLIER; > > > + > > > + if (max_current_300 > 150) > > > + mmc->caps |= MMC_CAP_SET_XPC_300; > > > + } > > > + if (caps[0] & SDHCI_CAN_VDD_180) { > > > + int max_current_180; > > > + > > > ocr_avail |= MMC_VDD_165_195; > > > > > > + max_current_180 = ((max_current_caps & > > > + SDHCI_MAX_CURRENT_180_MASK) >> > > > + SDHCI_MAX_CURRENT_180_SHIFT) * > > > + SDHCI_MAX_CURRENT_MULTIPLIER; > > > + > > > + if (max_current_180 > 150) > > > + mmc->caps |= MMC_CAP_SET_XPC_180; > > > + } > > > + > > > mmc->ocr_avail = ocr_avail; > > > mmc->ocr_avail_sdio = ocr_avail; > > > if (host->ocr_avail_sdio) > > > @@ -2024,7 +2146,7 @@ int sdhci_add_host(struct sdhci_host *host) > > > if (host->quirks & SDHCI_QUIRK_FORCE_BLK_SZ_2048) { > > > mmc->max_blk_size = 2; > > > } else { > > > - mmc->max_blk_size = (caps & SDHCI_MAX_BLOCK_MASK) >> > > > + mmc->max_blk_size = (caps[0] & SDHCI_MAX_BLOCK_MASK) >> > > > SDHCI_MAX_BLOCK_SHIFT; > > > if (mmc->max_blk_size >= 3) { > > > printk(KERN_WARNING "%s: Invalid maximum block size, > > > " > > > diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h > > > index 223762c..95d70e6 100644 > > > --- a/drivers/mmc/host/sdhci.h > > > +++ b/drivers/mmc/host/sdhci.h > > > @@ -69,6 +69,8 @@ > > > #define SDHCI_DATA_AVAILABLE 0x00000800 > > > #define SDHCI_CARD_PRESENT 0x00010000 > > > #define SDHCI_WRITE_PROTECT 0x00080000 > > > +#define SDHCI_DATA_LVL_MASK 0x00F00000 > > > +#define SDHCI_DATA_LVL_SHIFT 20 > > > > > > #define SDHCI_HOST_CONTROL 0x28 > > > #define SDHCI_CTRL_LED 0x01 > > > @@ -147,7 +149,8 @@ > > > > > > #define SDHCI_ACMD12_ERR 0x3C > > > > > > -/* 3E-3F reserved */ > > > +#define SDHCI_HOST_CONTROL2 0x3E > > > +#define SDHCI_CTRL_VDD_180 0x0008 > > > > > > #define SDHCI_CAPABILITIES 0x40 > > > #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F > > > @@ -168,9 +171,20 @@ > > > #define SDHCI_CAN_VDD_180 0x04000000 > > > #define SDHCI_CAN_64BIT 0x10000000 > > > > > > +#define SDHCI_SUPPORT_SDR50 0x00000001 > > > +#define SDHCI_SUPPORT_SDR104 0x00000002 > > > +#define SDHCI_SUPPORT_DDR50 0x00000004 > > > + > > > #define SDHCI_CAPABILITIES_1 0x44 > > > > > > -#define SDHCI_MAX_CURRENT 0x48 > > > +#define SDHCI_MAX_CURRENT 0x48 > > > +#define SDHCI_MAX_CURRENT_330_MASK 0x0000FF > > > +#define SDHCI_MAX_CURRENT_330_SHIFT 0 > > > +#define SDHCI_MAX_CURRENT_300_MASK 0x00FF00 > > > +#define SDHCI_MAX_CURRENT_300_SHIFT 8 > > > +#define SDHCI_MAX_CURRENT_180_MASK 0xFF0000 > > > +#define SDHCI_MAX_CURRENT_180_SHIFT 16 > > > +#define SDHCI_MAX_CURRENT_MULTIPLIER 4 > > > > > > /* 4C-4F reserved for more max current */ > > > > > > diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h > > > index bcb793e..ad7daa3 100644 > > > --- a/include/linux/mmc/host.h > > > +++ b/include/linux/mmc/host.h > > > @@ -117,6 +117,8 @@ struct mmc_host_ops { > > > > > > /* optional callback for HC quirks */ > > > void (*init_card)(struct mmc_host *host, struct mmc_card *card); > > > + > > > + int (*start_signal_voltage_switch)(struct mmc_host *host); > > > }; > > > > > > struct mmc_card; > > > @@ -173,6 +175,14 @@ struct mmc_host { > > > /* DDR mode at 1.2V */ > > > #define MMC_CAP_POWER_OFF_CARD (1 << 13) /* Can power off > > after > > > boot */ > > > #define MMC_CAP_BUS_WIDTH_TEST (1 << 14) /* CMD14/CMD19 bus > > > width ok */ > > > +#define MMC_CAP_UHS_SDR12 (1 << 15) /* Host supports UHS > SDR12 > > > mode */ > > > +#define MMC_CAP_UHS_SDR25 (1 << 16) /* Host supports UHS > SDR25 > > > mode */ > > > +#define MMC_CAP_UHS_SDR50 (1 << 17) /* Host supports UHS > SDR50 > > > mode */ > > > +#define MMC_CAP_UHS_SDR104 (1 << 18) /* Host supports UHS > SDR104 > > > mode */ > > > +#define MMC_CAP_UHS_DDR50 (1 << 19) /* Host supports UHS > DDR50 > > > mode */ > > > +#define MMC_CAP_SET_XPC_330 (1 << 20) /* Host supports > >150mA > > > current at 3.3V */ > > > +#define MMC_CAP_SET_XPC_300 (1 << 21) /* Host supports > >150mA > > > current at 3.0V */ > > > +#define MMC_CAP_SET_XPC_180 (1 << 22) /* Host supports > >150mA > > > current at 1.8V */ > > > > > > mmc_pm_flag_t pm_caps; /* supported pm features */ > > > > > > diff --git a/include/linux/mmc/sd.h b/include/linux/mmc/sd.h > > > index 178363b..3ba5aa6 100644 > > > --- a/include/linux/mmc/sd.h > > > +++ b/include/linux/mmc/sd.h > > > @@ -17,6 +17,7 @@ > > > /* This is basically the same command as for MMC with some quirks. > > */ > > > #define SD_SEND_RELATIVE_ADDR 3 /* bcr > R6 > > > */ > > > #define SD_SEND_IF_COND 8 /* bcr [11:0] See below > R7 > > > */ > > > +#define SD_SWITCH_VOLTAGE 11 /* ac > R1 > > > */ > > > > > > /* class 10 */ > > > #define SD_SWITCH 6 /* adtc [31:0] See below > R1 > > > */ > > > -- > > > 1.7.1 > > > > > > -- > > > To unsubscribe from this list: send the line "unsubscribe linux- > mmc" > > in > > > the body of a message to majord...@vger.kernel.org > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-mmc" > in > > the body of a message to majord...@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
