From: Marcel Ziswiler <marcel.ziswiler@xxxxxxxxxxx> Configure Apalis MMC1 D6 GPIO on SDMMC3_CLK_LB_IN as reserved function without any pull-up/down. Configure GPIO_PV2 as SD1_CD# according to latest V1.1 HW. Leave SDMMC3_CLK_LB_OUT muxed as SDMMC3 with output driver enabled aka not tristated and input driver enabled as well as it features some magic properties even though the external loopback is disabled and the internal loopback used as per SDMMC_VENDOR_MISC_CNTRL_0 register's SDMMC_SPARE1 bits being set to 0xfffd according to the TRM! This pin is now a not-connect on V1.1 HW in order to avoid any interference. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@xxxxxxxxxxx> --- arch/arm/boot/dts/tegra124-apalis.dtsi | 53 +++++++++++++++------------------- 1 file changed, 23 insertions(+), 30 deletions(-) diff --git a/arch/arm/boot/dts/tegra124-apalis.dtsi b/arch/arm/boot/dts/tegra124-apalis.dtsi index 747ce81..2bfc579 100644 --- a/arch/arm/boot/dts/tegra124-apalis.dtsi +++ b/arch/arm/boot/dts/tegra124-apalis.dtsi @@ -414,18 +414,10 @@ nvidia,tristate = <TEGRA_PIN_DISABLE>; nvidia,enable-input = <TEGRA_PIN_ENABLE>; }; - /* - * Don't use MMC1_D6 aka SDMMC3_CLK_LB_IN for now as it - * features some magic properties even though the - * external loopback is disabled and the internal - * loopback used as per SDMMC_VENDOR_MISC_CNTRL_0 - * register's SDMMC_SPARE1 bits being set to 0xfffd - * according to the TRM! - */ sdmmc3_clk_lb_in_pee5 { /* D6 GPIO */ nvidia,pins = "sdmmc3_clk_lb_in_pee5"; - nvidia,function = "sdmmc3"; - nvidia,pull = <TEGRA_PIN_PULL_UP>; + nvidia,function = "rsvd2"; + nvidia,pull = <TEGRA_PIN_PULL_NONE>; nvidia,tristate = <TEGRA_PIN_DISABLE>; nvidia,enable-input = <TEGRA_PIN_ENABLE>; }; @@ -520,20 +512,12 @@ nvidia,tristate = <TEGRA_PIN_DISABLE>; nvidia,enable-input = <TEGRA_PIN_ENABLE>; }; - /* - * Don't use SD1_CD# aka SDMMC3_CLK_LB_OUT for now as it - * features some magic properties even though the - * external loopback is disabled and the internal - * loopback used as per SDMMC_VENDOR_MISC_CNTRL_0 - * register's SDMMC_SPARE1 bits being set to 0xfffd - * according to the TRM! - */ - sdmmc3_clk_lb_out_pee4 { /* CD# GPIO */ - nvidia,pins = "sdmmc3_clk_lb_out_pee4"; - nvidia,function = "rsvd2"; - nvidia,pull = <TEGRA_PIN_PULL_NONE>; + sdmmc3_cd_n_pv2 { /* CD# GPIO */ + nvidia,pins = "sdmmc3_cd_n_pv2"; + nvidia,function = "rsvd3"; + nvidia,pull = <TEGRA_PIN_PULL_UP>; nvidia,tristate = <TEGRA_PIN_ENABLE>; - nvidia,enable-input = <TEGRA_PIN_DISABLE>; + nvidia,enable-input = <TEGRA_PIN_ENABLE>; }; /* Apalis SPDIF */ @@ -1512,13 +1496,6 @@ nvidia,tristate = <TEGRA_PIN_ENABLE>; nvidia,enable-input = <TEGRA_PIN_DISABLE>; }; - sdmmc3_cd_n_pv2 { /* NC */ - nvidia,pins = "sdmmc3_cd_n_pv2"; - nvidia,function = "rsvd3"; - nvidia,pull = <TEGRA_PIN_PULL_DOWN>; - nvidia,tristate = <TEGRA_PIN_ENABLE>; - nvidia,enable-input = <TEGRA_PIN_DISABLE>; - }; gpio_x1_aud_px1 { /* NC */ nvidia,pins = "gpio_x1_aud_px1"; nvidia,function = "rsvd2"; @@ -1568,6 +1545,22 @@ nvidia,tristate = <TEGRA_PIN_ENABLE>; nvidia,enable-input = <TEGRA_PIN_DISABLE>; }; + /* + * Leave SDMMC3_CLK_LB_OUT muxed as SDMMC3 with output + * driver enabled aka not tristated and input driver + * enabled as well as it features some magic properties + * even though the external loopback is disabled and the + * internal loopback used as per + * SDMMC_VENDOR_MISC_CNTRL_0 register's SDMMC_SPARE1 + * bits being set to 0xfffd according to the TRM! + */ + sdmmc3_clk_lb_out_pee4 { /* NC */ + nvidia,pins = "sdmmc3_clk_lb_out_pee4"; + nvidia,function = "sdmmc3"; + nvidia,pull = <TEGRA_PIN_PULL_NONE>; + nvidia,tristate = <TEGRA_PIN_DISABLE>; + nvidia,enable-input = <TEGRA_PIN_ENABLE>; + }; }; }; -- 2.9.3 -- 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