This property is useful when we don't want to access boot partitions on eMMC Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@xxxxxxxxxxx> --- Documentation/devicetree/bindings/mmc/mmc.txt | 1 + drivers/mmc/host/sdhci-esdhc-imx.c | 8 ++++++++ include/linux/platform_data/mmc-esdhc-imx.h | 1 + 3 files changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 431716e..59cc854 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -40,6 +40,7 @@ Optional properties: - mmc-hs200-1_2v: eMMC HS200 mode(1.2V I/O) is supported - mmc-hs400-1_8v: eMMC HS400 mode(1.8V I/O) is supported - mmc-hs400-1_2v: eMMC HS400 mode(1.2V I/O) is supported +- no-boot-part : when preset, tells to access boot partitions *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line polarity properties, we have to fix the meaning of the "normal" and "inverted" diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index ccec0e3..439e663 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -942,6 +942,11 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev, if (of_property_read_u32(np, "fsl,delay-line", &boarddata->delay_line)) boarddata->delay_line = 0; + if (of_find_property(np, "no-boot-part", NULL)) + boarddata->access_boot_part = false; + else + boarddata->access_boot_part = true; + return 0; } #else @@ -1119,6 +1124,9 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; } + if (!boarddata->access_boot_part) + host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC; + err = sdhci_add_host(host); if (err) goto disable_clk; diff --git a/include/linux/platform_data/mmc-esdhc-imx.h b/include/linux/platform_data/mmc-esdhc-imx.h index 75f70f6..a34ee9e 100644 --- a/include/linux/platform_data/mmc-esdhc-imx.h +++ b/include/linux/platform_data/mmc-esdhc-imx.h @@ -46,5 +46,6 @@ struct esdhc_platform_data { unsigned int f_max; bool support_vsel; unsigned int delay_line; + bool access_boot_part; }; #endif /* __ASM_ARCH_IMX_ESDHC_H */ 2.0.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html