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 1d5e99964bbf89411daa4a73bc22b9d091f2dcca..0aaacea1d887bf2c2b61f9887f970a5719bbf6fb 100644 (file)
--- a/arch/arm/boot/dts/am571x-idk.dts
+++ b/arch/arm/boot/dts/am571x-idk.dts
@@ -175,14 +175,9 @@
 };
 
 &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 c65d7f6d3b5a6384b34c9969b945a42b442ca51a..ea1c119feaa5746d4b72baeaf63b0cfd2a15dce2 100644 (file)
--- a/arch/arm/boot/dts/am572x-idk.dts
+++ b/arch/arm/boot/dts/am572x-idk.dts
@@ -16,14 +16,9 @@
 };
 
 &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 dc5141c35610e9596ee5e6fb3272bedc95e426c3..7935d70874ce2b9558a1c0410c40ff4d40633e9e 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 d02f5fa61e5f5a5144c2a1f8032a96d156b23eb4..d50de7a6ea6c535090c64fc659edf2d9a7cc313c 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-common.dtsi
@@ -430,6 +430,7 @@
 
        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 a374b5cd6db0e2ec16ea7994e33b350f68aa8532..7b113b52c3fb6494411afcd7fc32e7f5bb150e15 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revb1.dts
@@ -16,14 +16,9 @@
 };
 
 &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 4badd2144db9a3ba95fdcb3bb3fd007942672116..30c500b15b21972baf89a7ce540776ff987f519a 100644 (file)
--- a/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
+++ b/arch/arm/boot/dts/am57xx-beagle-x15-revc.dts
@@ -16,14 +16,9 @@
 };
 
 &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>;
 };