summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv8/generic_timer.c55
-rw-r--r--arch/arm/dts/Makefile2
-rw-r--r--arch/arm/dts/sun50i-h5-orangepi-zero-plus.dts145
-rw-r--r--arch/arm/dts/sun8i-h2-plus-orangepi-r1.dts101
-rw-r--r--arch/arm/mach-sunxi/Kconfig4
5 files changed, 301 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv8/generic_timer.c b/arch/arm/cpu/armv8/generic_timer.c
index bf07a706a0..c1706dcec1 100644
--- a/arch/arm/cpu/armv8/generic_timer.c
+++ b/arch/arm/cpu/armv8/generic_timer.c
@@ -20,27 +20,70 @@ unsigned long get_tbclk(void)
return cntfrq;
}
+#ifdef CONFIG_SYS_FSL_ERRATUM_A008585
/*
- * Generic timer implementation of timer_read_counter()
+ * FSL erratum A-008585 says that the ARM generic timer counter "has the
+ * potential to contain an erroneous value for a small number of core
+ * clock cycles every time the timer value changes".
+ * This sometimes leads to a consecutive counter read returning a lower
+ * value than the previous one, thus reporting the time to go backwards.
+ * The workaround is to read the counter twice and only return when the value
+ * was the same in both reads.
+ * Assumes that the CPU runs in much higher frequency than the timer.
*/
unsigned long timer_read_counter(void)
{
unsigned long cntpct;
-#ifdef CONFIG_SYS_FSL_ERRATUM_A008585
- /* This erratum number needs to be confirmed to match ARM document */
unsigned long temp;
-#endif
+
isb();
asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct));
-#ifdef CONFIG_SYS_FSL_ERRATUM_A008585
asm volatile("mrs %0, cntpct_el0" : "=r" (temp));
while (temp != cntpct) {
asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct));
asm volatile("mrs %0, cntpct_el0" : "=r" (temp));
}
-#endif
+
+ return cntpct;
+}
+#elif CONFIG_SUNXI_A64_TIMER_ERRATUM
+/*
+ * This erratum sometimes flips the lower 11 bits of the counter value
+ * to all 0's or all 1's, leading to jumps forwards or backwards.
+ * Backwards jumps might be interpreted all roll-overs and be treated as
+ * huge jumps forward.
+ * The workaround is to check whether the lower 11 bits of the counter are
+ * all 0 or all 1, then discard this value and read again.
+ * This occasionally discards valid values, but will catch all erroneous
+ * reads and fixes the problem reliably. Also this mostly requires only a
+ * single read, so does not have any significant overhead.
+ * The algorithm was conceived by Samuel Holland.
+ */
+unsigned long timer_read_counter(void)
+{
+ unsigned long cntpct;
+
+ isb();
+ do {
+ asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct));
+ } while (((cntpct + 1) & GENMASK(10, 0)) <= 1);
+
return cntpct;
}
+#else
+/*
+ * timer_read_counter() using the Arm Generic Timer (aka arch timer).
+ */
+unsigned long timer_read_counter(void)
+{
+ unsigned long cntpct;
+
+ isb();
+ asm volatile("mrs %0, cntpct_el0" : "=r" (cntpct));
+
+ return cntpct;
+}
+#endif
uint64_t get_ticks(void)
{
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 64f6d21c3c..946023093d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -357,6 +357,7 @@ dtb-$(CONFIG_MACH_SUN8I_A83T) += \
sun8i-a83t-tbs-a711.dts
dtb-$(CONFIG_MACH_SUN8I_H3) += \
sun8i-h2-plus-libretech-all-h3-cc.dtb \
+ sun8i-h2-plus-orangepi-r1.dtb \
sun8i-h2-plus-orangepi-zero.dtb \
sun8i-h3-bananapi-m2-plus.dtb \
sun8i-h3-libretech-all-h3-cc.dtb \
@@ -380,6 +381,7 @@ dtb-$(CONFIG_MACH_SUN50I_H5) += \
sun50i-h5-libretech-all-h3-cc.dtb \
sun50i-h5-nanopi-neo2.dtb \
sun50i-h5-nanopi-neo-plus2.dtb \
+ sun50i-h5-orangepi-zero-plus.dtb \
sun50i-h5-orangepi-pc2.dtb \
sun50i-h5-orangepi-prime.dtb \
sun50i-h5-orangepi-zero-plus2.dtb
diff --git a/arch/arm/dts/sun50i-h5-orangepi-zero-plus.dts b/arch/arm/dts/sun50i-h5-orangepi-zero-plus.dts
new file mode 100644
index 0000000000..e79cf3baf4
--- /dev/null
+++ b/arch/arm/dts/sun50i-h5-orangepi-zero-plus.dts
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2016 ARM Ltd.
+ * Copyright (C) 2018 Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR X11)
+ */
+
+/dts-v1/;
+#include "sun50i-h5.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/sun4i-a10.h>
+
+/ {
+ model = "Xunlong Orange Pi Zero Plus";
+ compatible = "xunlong,orangepi-zero-plus", "allwinner,sun50i-h5";
+
+ reg_vcc3v3: vcc3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ aliases {
+ ethernet0 = &emac;
+ ethernet1 = &rtl8189ftv;
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ pwr {
+ label = "orangepi:green:pwr";
+ gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PA10 */
+ default-state = "on";
+ };
+
+ status {
+ label = "orangepi:red:status";
+ gpios = <&pio 0 17 GPIO_ACTIVE_HIGH>; /* PA17 */
+ };
+ };
+
+ reg_gmac_3v3: gmac-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "gmac-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ startup-delay-us = <100000>;
+ enable-active-high;
+ gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>; /* PD6 */
+ };
+};
+
+&ehci0 {
+ status = "okay";
+};
+
+&ehci1 {
+ status = "okay";
+};
+
+&emac {
+ pinctrl-names = "default";
+ pinctrl-0 = <&emac_rgmii_pins>;
+ phy-supply = <&reg_gmac_3v3>;
+ phy-handle = <&ext_rgmii_phy>;
+ phy-mode = "rgmii";
+ status = "okay";
+};
+
+&external_mdio {
+ ext_rgmii_phy: ethernet-phy@1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ };
+};
+
+&mmc0 {
+ vmmc-supply = <&reg_vcc3v3>;
+ bus-width = <4>;
+ cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>; /* PF6 */
+ status = "okay";
+};
+
+&mmc1 {
+ vmmc-supply = <&reg_vcc3v3>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
+
+ /*
+ * Explicitly define the sdio device, so that we can add an ethernet
+ * alias for it (which e.g. makes u-boot set a mac-address).
+ */
+ rtl8189ftv: sdio_wifi@1 {
+ reg = <1>;
+ };
+};
+
+/*
+&spi0 {
+ status = "okay";
+
+ flash@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "mxicy,mx25l1606e", "winbond,w25q128";
+ reg = <0>;
+ spi-max-frequency = <40000000>;
+ };
+};
+*/
+
+&ohci0 {
+ status = "okay";
+};
+
+&ohci1 {
+ status = "okay";
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins_a>;
+ status = "okay";
+};
+
+&usb_otg {
+ dr_mode = "peripheral";
+ status = "okay";
+};
+
+&usbphy {
+ /* USB Type-A ports' VBUS is always on */
+ usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
+ status = "okay";
+};
diff --git a/arch/arm/dts/sun8i-h2-plus-orangepi-r1.dts b/arch/arm/dts/sun8i-h2-plus-orangepi-r1.dts
new file mode 100644
index 0000000000..c652ac3b71
--- /dev/null
+++ b/arch/arm/dts/sun8i-h2-plus-orangepi-r1.dts
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.xyz>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/* Orange Pi R1 is based on Orange Pi Zero design */
+#include "sun8i-h2-plus-orangepi-zero.dts"
+
+/ {
+ model = "Xunlong Orange Pi R1";
+ compatible = "xunlong,orangepi-r1", "allwinner,sun8i-h2-plus";
+
+ /delete-node/ reg_vcc_wifi;
+
+ /*
+ * Ths pin of this regulator is the same with the Wi-Fi extra
+ * regulator on the original Zero. However it's used for USB
+ * Ethernet rather than the Wi-Fi now.
+ */
+ reg_vcc_usb_eth: reg-vcc-usb-ethernet {
+ compatible = "regulator-fixed";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc-usb-ethernet";
+ enable-active-high;
+ gpio = <&pio 0 20 GPIO_ACTIVE_HIGH>;
+ };
+
+ aliases {
+ ethernet1 = &rtl8189etv;
+ };
+};
+
+/*
+&spi0 {
+ status = "okay";
+
+ flash@0 {
+ compatible = "mxicy,mx25l12805d", "jedec,spi-nor";
+ };
+};
+*/
+
+&ohci1 {
+ /*
+ * RTL8152B USB-Ethernet adapter is connected to USB1,
+ * and it's a USB 2.0 device. So the OHCI1 controller
+ * can be left disabled.
+ */
+ status = "disabled";
+};
+
+&mmc1 {
+ vmmc-supply = <&reg_vcc3v3>;
+ vqmmc-supply = <&reg_vcc3v3>;
+
+ rtl8189etv: sdio_wifi@1 {
+ reg = <1>;
+ };
+};
+
+&usbphy {
+ usb1_vbus-supply = <&reg_vcc_usb_eth>;
+};
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index a3f7723028..3624a03947 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -84,6 +84,9 @@ config SUNXI_HIGH_SRAM
Chips using the latter setup are supposed to select this option to
adjust the addresses accordingly.
+config SUNXI_A64_TIMER_ERRATUM
+ bool
+
# Note only one of these may be selected at a time! But hidden choices are
# not supported by Kconfig
config SUNXI_GEN_SUN4I
@@ -270,6 +273,7 @@ config MACH_SUN50I
select SUNXI_DRAM_DW_32BIT
select FIT
select SPL_LOAD_FIT
+ select SUNXI_A64_TIMER_ERRATUM
config MACH_SUN50I_H5
bool "sun50i (Allwinner H5)"
generated by cgit (git 2.34.1) at 2024-12-27 10:14:50 +0000