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authorIgor Opaniuk <igor.opaniuk@toradex.com>2019-03-19 11:03:55 +0200
committerIgor Opaniuk <igor.opaniuk@toradex.com>2019-03-20 10:13:29 +0200
commit7ffa92d64cc7a6331faaae3e2507458461ab90f3 (patch)
treec7461904dcb3d4f2301852c45564e511c653da5b /arch
parentfb4357df1c9272811c80afce0964fc3af51181fe (diff)
imx6qdl-colibri.dtsi: UHS-I support for v1.1a hw
Provide proper configuration for VGEN3, to make sure it's is always powered which allows that rail to be automatically switched to 1.8 volts for proper UHS-I operation. By default it's disabled. With UHS-I enabled: [ 104.153898] mmc1: new ultra high speed SDR104 SDHC card at address 59b4 [ 104.166202] mmcblk1: mmc1:59b4 USD00 15.0 GiB [ 104.173923] mmcblk1: p1 root@colibri-imx6:~# hdparm -t /dev/mmcblk1 /dev/mmcblk1: Timing buffered disk reads: 226 MB in 3.01 seconds = 75.01 MB/sec Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/boot/dts/imx6qdl-colibri.dtsi51
1 files changed, 49 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index f667ac6d8a93..23770786ab77 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -290,6 +290,13 @@
regulator-always-on;
};
+ vgen3_reg: vgen3 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
vgen4_reg: vgen4 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
@@ -791,6 +798,28 @@
MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17071
>;
};
+
+ pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+ fsl,pins = <
+ MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170b1
+ MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100b1
+ MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170b1
+ MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170b1
+ MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170b1
+ MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170b1
+ >;
+ };
+
+ pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+ fsl,pins = <
+ MX6QDL_PAD_SD1_CMD__SD1_CMD 0x170f1
+ MX6QDL_PAD_SD1_CLK__SD1_CLK 0x100f1
+ MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x170f1
+ MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x170f1
+ MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x170f1
+ MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x170f1
+ >;
+ };
};
weim {
@@ -1004,16 +1033,34 @@
/* MMC */
&usdhc1 {
- label = "MMC1";
+/*
+ * The define SD_1_8 allows to use the SD interface at a higher speed mode
+ * if the card supports it. For this the signaling voltage is switched from
+ * 3.3V to 1.8V under the usdhc1's drivers control which is supported starting
+ * with hardware revision V1.1A.
+ */
+#ifdef SD_1_8
+ pinctrl-names = "default", "state_100mhz", "state_200mhz";
+ pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_mmc_cd>;
+ pinctrl-1 = <&pinctrl_usdhc1_100mhz &pinctrl_mmc_cd>;
+ pinctrl-2 = <&pinctrl_usdhc1_200mhz &pinctrl_mmc_cd>;
+ vqmmc-supply = <&vgen3_reg>;
+ sd-uhs-sdr12;
+ sd-uhs-sdr25;
+ sd-uhs-sdr50;
+ sd-uhs-sdr104;
+#else
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_mmc_cd>;
+ no-1-8-v;
+#endif
+ label = "MMC1";
cd-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
disable-wp;
enable-sdio-wakeup;
keep-power-in-suspend;
vmmc-supply = <&reg_3p3v>;
bus-width = <4>;
- no-1-8-v;
status = "disabled";
};