From mboxrd@z Thu Jan 1 00:00:00 1970 From: Faiz Abbas Date: Tue, 4 Jun 2019 18:46:57 +0530 Subject: [U-Boot] [PATCH v6 12/15] mmc: am654_sdhci: Add a platform specific set_control_reg() callback In-Reply-To: <20190604131700.29936-1-faiz_abbas@ti.com> References: <20190604131700.29936-1-faiz_abbas@ti.com> Message-ID: <20190604131700.29936-13-faiz_abbas@ti.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Add a platform specific set_control_reg() callback to help switch to UHS speed modes. Signed-off-by: Faiz Abbas Reviewed-by: Tom Rini --- drivers/mmc/am654_sdhci.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/am654_sdhci.c b/drivers/mmc/am654_sdhci.c index b9a7924d4e..fe633aa39a 100644 --- a/drivers/mmc/am654_sdhci.c +++ b/drivers/mmc/am654_sdhci.c @@ -75,6 +75,21 @@ struct am654_sdhci_plat { bool dll_on; }; +static void am654_sdhci_set_control_reg(struct sdhci_host *host) +{ + struct mmc *mmc = (struct mmc *)host->mmc; + u32 reg; + + if (IS_SD(host->mmc) && + mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) { + reg = sdhci_readw(host, SDHCI_HOST_CONTROL2); + reg |= SDHCI_CTRL_VDD_180; + sdhci_writew(host, reg, SDHCI_HOST_CONTROL2); + } + + sdhci_set_uhs_timing(host); +} + static int am654_sdhci_set_ios_post(struct sdhci_host *host) { struct udevice *dev = host->mmc->dev; @@ -143,7 +158,8 @@ static int am654_sdhci_set_ios_post(struct sdhci_host *host) } const struct sdhci_ops am654_sdhci_ops = { - .set_ios_post = &am654_sdhci_set_ios_post, + .set_ios_post = &am654_sdhci_set_ios_post, + .set_control_reg = &am654_sdhci_set_control_reg, }; int am654_sdhci_init(struct am654_sdhci_plat *plat) -- 2.19.2