ARM: dts: am57xx: Disable voltage switching for SD card

[ Upstream commit fb59ee37cfe20d10d19568899d1458a58361246c ]

If UHS speed modes are enabled, a compatible SD card switches down to
1.8V during enumeration. If after this a software reboot/crash takes
place and on-chip ROM tries to enumerate the SD card, the difference in
IO voltages (host @ 3.3V and card @ 1.8V) may end up damaging the card.

The fix for this is to have support for power cycling the card in
hardware (with a PORz/soft-reset line causing a power cycle of the
card). Because the beaglebone X15 (rev A,B and C), am57xx-idks and
am57xx-evms don't have this capability, disable voltage switching for
these boards.

The major effect of this is that the maximum supported speed
mode is now high speed(50 MHz) down from SDR104(200 MHz).

commit 88a748419b84 ("ARM: dts: am57xx-idk: Remove support for voltage
switching for SD card") did this only for idk boards. Do it for all
affected boards.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/arm/boot/dts/am571x-idk.dts b/arch/arm/boot/dts/am571x-idk.dts
index d9a2049..6bebedf 100644 (file)
--- a/arch/arm/boot/dts/am571x-idk.dts
+++ b/arch/arm/boot/dts/am571x-idk.dts
@@ -98,14 +98,9 @@
 };
 
 &mmc1 {
-       pinctrl-names = "default", "hs", "sdr12", "sdr25", "sdr50", "ddr50", "sdr104";
+       pinctrl-names = "default", "hs";
        pinctrl-0 = <&mmc1_pins_default_no_clk_pu>;
        pinctrl-1 = <&mmc1_pins_hs>;
-       pinctrl-2 = <&mmc1_pins_sdr12>;
-       pinctrl-3 = <&mmc1_pins_sdr25>;
-       pinctrl-4 = <&mmc1_pins_sdr50>;
-       pinctrl-5 = <&mmc1_pins_ddr50_rev20 &mmc1_iodelay_ddr50_conf>;
-       pinctrl-6 = <&mmc1_pins_sdr104 &mmc1_iodelay_sdr104_rev20_conf>;
 };
 
 &mmc2 {

diff --git a/arch/arm/boot/dts/am572x-idk.dts b/arch/arm/boot/dts/am572x-idk.dts
index 3ef9111..9235173 100644 (file)
--- a/arch/arm/boot/dts/am572x-idk.dts
+++ b/arch/arm/boot/dts/am572x-idk.dts
@@ -20,14 +20,9 @@
 };
 
 &mmc1 {
-       pinctrl-names = "default", "hs", "sdr12", "sdr25", "sdr50", "ddr50", "sdr104";
+       pinctrl-names = "default", "hs";
        pinctrl-0 = <&mmc1_pins_default_no_clk_pu>;
        pinctrl-1 = <&mmc1_pins_hs>;
-       pinctrl-2 = <&mmc1_pins_sdr12>;
-       pinctrl-3 = <&mmc1_pins_sdr25>;
-       pinctrl-4 = <&mmc1_pins_sdr50>;
-       pinctrl-5 = <&mmc1_pins_ddr50 &mmc1_iodelay_ddr_rev20_conf>;
-       pinctrl-6 = <&mmc1_pins_sdr104 &mmc1_iodelay_sdr104_rev20_conf>;
 };
 
 &mmc2 {

diff --git a/arch/arm/boot/dts/am574x-idk.dts b/arch/arm/boot/dts/am574x-idk.dts
index 378dfa7..ae43de3 100644 (file)
--- a/arch/arm/boot/dts/am574x-idk.dts
+++ b/arch/arm/boot/dts/am574x-idk.dts
@@ -24,14 +24,9 @@
 };
 
 &mmc1 {
-       pinctrl-names = "default", "hs", "sdr12", "sdr25", "sdr50", "ddr50", "sdr104";
+       pinctrl-names = "default", "hs";
        pinctrl-0 = <&mmc1_pins_default_no_clk_pu>;
        pinctrl-1 = <&mmc1_pins_hs>;
-       pinctrl-2 = <&mmc1_pins_default>;
-       pinctrl-3 = <&mmc1_pins_hs>;
-       pinctrl-4 = <&mmc1_pins_sdr50>;
-       pinctrl-5 = <&mmc1_pins_ddr50 &mmc1_iodelay_ddr_conf>;
-       pinctrl-6 = <&mmc1_pins_ddr50 &mmc1_iodelay_sdr104_conf>;
 };
 
 &mmc2 {

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
index ad95311..d53532b 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
@@ -433,6 +433,7 @@
 
        bus-width = <4>;
        cd-gpios = <&gpio6 27 GPIO_ACTIVE_LOW>; /* gpio 219 */
+       no-1-8-v;
 };
 
 &mmc2 {

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
index 5a77b33..34c6996 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
@@ -19,14 +19,9 @@
 };
 
 &mmc1 {
-       pinctrl-names = "default", "hs", "sdr12", "sdr25", "sdr50", "ddr50", "sdr104";
+       pinctrl-names = "default", "hs";
        pinctrl-0 = <&mmc1_pins_default>;
        pinctrl-1 = <&mmc1_pins_hs>;
-       pinctrl-2 = <&mmc1_pins_sdr12>;
-       pinctrl-3 = <&mmc1_pins_sdr25>;
-       pinctrl-4 = <&mmc1_pins_sdr50>;
-       pinctrl-5 = <&mmc1_pins_ddr50 &mmc1_iodelay_ddr_rev11_conf>;
-       pinctrl-6 = <&mmc1_pins_sdr104 &mmc1_iodelay_sdr104_rev11_conf>;
        vmmc-supply = <&vdd_3v3>;
        vqmmc-supply = <&ldo1_reg>;
 };

diff --git a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
index 17c41da..ccd9916 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
@@ -19,14 +19,9 @@
 };
 
 &mmc1 {
-       pinctrl-names = "default", "hs", "sdr12", "sdr25", "sdr50", "ddr50", "sdr104";
+       pinctrl-names = "default", "hs";
        pinctrl-0 = <&mmc1_pins_default>;
        pinctrl-1 = <&mmc1_pins_hs>;
-       pinctrl-2 = <&mmc1_pins_sdr12>;
-       pinctrl-3 = <&mmc1_pins_sdr25>;
-       pinctrl-4 = <&mmc1_pins_sdr50>;
-       pinctrl-5 = <&mmc1_pins_ddr50 &mmc1_iodelay_ddr_rev20_conf>;
-       pinctrl-6 = <&mmc1_pins_sdr104 &mmc1_iodelay_sdr104_rev20_conf>;
        vmmc-supply = <&vdd_3v3>;
        vqmmc-supply = <&ldo1_reg>;
 };