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u-boot/arch/arm/dts/am572x-idk.dts

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ARM: dts: AM572x-IDK Initial Support Add initial DTS support for AM572-IDK evm. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Schuyler Patton <spatton@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2016-06-10 04:05:45 +00:00
/*
* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/dts-v1/;
#include "dra74x.dtsi"
ARM: dts: am574x-idk: Add initial support Add initial dts support for am574x-idk Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-12-29 06:17:57 +00:00
#include "am572x-idk-common.dtsi"
ARM: dts: AM572x-IDK Initial Support Add initial DTS support for AM572-IDK evm. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Schuyler Patton <spatton@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2016-06-10 04:05:45 +00:00
#include "am57xx-idk-common.dtsi"
ARM: dts: dra7-mmc-iodelay: Add a new pinctrl group for clk line without pullup During a short period when the bus voltage is switched from 3.3v to 1.8v, (to enumerate UHS mode), the mmc module is disabled and the mmc IO lines are kept in a state according to the programmed pad mux pull type. According to 4.2.4.2 Timing to Switch Signal Voltage in "SD Specifications Part 1 Physical Layer Specification Version 5.00 February 22, 2016", the host should hold CLK low for at least 5ms. In order to keep the card line low during voltage switch, the pad mux of mmc1_clk line should be configured to pull down. Add a new pinctrl group for clock line without pullup to be used in boards where mmc1_clk line is not connected to an external pullup. Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-06-20 09:37:19 +00:00
#include "dra7-mmc-iodelay.dtsi"
arm: dts: dra7: sync DT with latest Linux Sync all dra7* specific dts files with the upstream kernel including changes queued for 4.14 https://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git/log/?h=omap-for-v4.14/dt-v3 Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-21 07:20:59 +00:00
#include "dra74x-mmc-iodelay.dtsi"
ARM: dts: AM572x-IDK Initial Support Add initial DTS support for AM572-IDK evm. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Schuyler Patton <spatton@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2016-06-10 04:05:45 +00:00
/ {
model = "TI AM5728 IDK";
compatible = "ti,am5728-idk", "ti,am5728", "ti,dra742", "ti,dra74",
"ti,dra7";
};
arm: dts: dra7: sync DT with latest Linux Sync all dra7* specific dts files with the upstream kernel including changes queued for 4.14 https://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git/log/?h=omap-for-v4.14/dt-v3 Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-21 07:20:59 +00:00
&mmc1 {
ARM: dts: am57xx: Disable voltage switching for SD card 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-evms and am57xx-idks 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). Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-06-20 09:37:21 +00:00
pinctrl-names = "default", "hs";
ARM: dts: dra7-mmc-iodelay: Add a new pinctrl group for clk line without pullup During a short period when the bus voltage is switched from 3.3v to 1.8v, (to enumerate UHS mode), the mmc module is disabled and the mmc IO lines are kept in a state according to the programmed pad mux pull type. According to 4.2.4.2 Timing to Switch Signal Voltage in "SD Specifications Part 1 Physical Layer Specification Version 5.00 February 22, 2016", the host should hold CLK low for at least 5ms. In order to keep the card line low during voltage switch, the pad mux of mmc1_clk line should be configured to pull down. Add a new pinctrl group for clock line without pullup to be used in boards where mmc1_clk line is not connected to an external pullup. Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
2019-06-20 09:37:19 +00:00
pinctrl-0 = <&mmc1_pins_default_no_clk_pu>;
arm: dts: dra7: sync DT with latest Linux Sync all dra7* specific dts files with the upstream kernel including changes queued for 4.14 https://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git/log/?h=omap-for-v4.14/dt-v3 Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2017-08-21 07:20:59 +00:00
pinctrl-1 = <&mmc1_pins_hs>;
};
&mmc2 {
pinctrl-names = "default", "hs", "ddr_1_8v";
pinctrl-0 = <&mmc2_pins_default>;
pinctrl-1 = <&mmc2_pins_hs>;
pinctrl-2 = <&mmc2_pins_ddr_rev20>;
};
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