From mboxrd@z Thu Jan 1 00:00:00 1970 From: abrestic@chromium.org (Andrew Bresticker) Date: Mon, 14 Apr 2014 18:42:41 -0700 Subject: [PATCH 2/4] mmc: tegra: fix reporting of base clock frequency In-Reply-To: <1397526163-20126-1-git-send-email-abrestic@chromium.org> References: <1397526163-20126-1-git-send-email-abrestic@chromium.org> Message-ID: <1397526163-20126-3-git-send-email-abrestic@chromium.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Tegra SDHCI controllers, by default, report a base clock frequency of 208Mhz in SDHCI_CAPABILTIES which may or may not be equal to the actual base clock frequency. While this can be overridden by setting BASE_CLK_FREQ in VENDOR_CLOCK_CTRL on Tegra30 and later SoCs, just set SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN and supply a get_max_clock() callback to get the actual rate of the base clock. Signed-off-by: Andrew Bresticker --- drivers/mmc/host/sdhci-tegra.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 3cadd9c..c3f92d9 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -165,13 +165,15 @@ static const struct sdhci_ops tegra_sdhci_ops = { .write_l = tegra_sdhci_writel, .platform_bus_width = tegra_sdhci_buswidth, .platform_reset_exit = tegra_sdhci_reset_exit, + .get_max_clock = sdhci_pltfm_clk_get_max_clock, }; static const struct sdhci_pltfm_data sdhci_tegra20_pdata = { .quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | SDHCI_QUIRK_SINGLE_POWER_WRITE | SDHCI_QUIRK_NO_HISPD_BIT | - SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, + SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | + SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, .ops = &tegra_sdhci_ops, }; @@ -186,7 +188,8 @@ static const struct sdhci_pltfm_data sdhci_tegra30_pdata = { SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | SDHCI_QUIRK_SINGLE_POWER_WRITE | SDHCI_QUIRK_NO_HISPD_BIT | - SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, + SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | + SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, .ops = &tegra_sdhci_ops, }; @@ -202,7 +205,8 @@ static const struct sdhci_pltfm_data sdhci_tegra114_pdata = { SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | SDHCI_QUIRK_SINGLE_POWER_WRITE | SDHCI_QUIRK_NO_HISPD_BIT | - SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, + SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | + SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, .ops = &tegra_sdhci_ops, }; -- 1.9.1.423.g4596e3a