* [PATCH v6 1/2] MIPS: Loongson64: Add Loongson-2K1000 reset platform driver
@ 2021-06-30 6:51 Qing Zhang
2021-06-30 6:51 ` [PATCH v6 2/2] MIPS: Loongson64: DTS: Add pm block node for Loongson-2K1000 Qing Zhang
0 siblings, 1 reply; 4+ messages in thread
From: Qing Zhang @ 2021-06-30 6:51 UTC (permalink / raw)
To: Thomas Bogendoerfer, Rob Herring, Jiaxun Yang
Cc: devicetree, linux-mips, linux-kernel
Add power management register operations to support reboot and poweroff.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
---
v5-v6:
Calculate others by base
---
drivers/platform/mips/Kconfig | 6 ++++
drivers/platform/mips/Makefile | 1 +
drivers/platform/mips/ls2k-reset.c | 53 ++++++++++++++++++++++++++++++
3 files changed, 60 insertions(+)
create mode 100644 drivers/platform/mips/ls2k-reset.c
diff --git a/drivers/platform/mips/Kconfig b/drivers/platform/mips/Kconfig
index 8ac149173c64..d421e1482395 100644
--- a/drivers/platform/mips/Kconfig
+++ b/drivers/platform/mips/Kconfig
@@ -30,4 +30,10 @@ config RS780E_ACPI
help
Loongson RS780E PCH ACPI Controller driver.
+config LS2K_RESET
+ bool "Loongson-2K1000 Reset Controller"
+ depends on MACH_LOONGSON64 || COMPILE_TEST
+ help
+ Loongson-2K1000 Reset Controller driver.
+
endif # MIPS_PLATFORM_DEVICES
diff --git a/drivers/platform/mips/Makefile b/drivers/platform/mips/Makefile
index 178149098777..4c71444e453a 100644
--- a/drivers/platform/mips/Makefile
+++ b/drivers/platform/mips/Makefile
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_CPU_HWMON) += cpu_hwmon.o
obj-$(CONFIG_RS780E_ACPI) += rs780e-acpi.o
+obj-$(CONFIG_LS2K_RESET) += ls2k-reset.o
diff --git a/drivers/platform/mips/ls2k-reset.c b/drivers/platform/mips/ls2k-reset.c
new file mode 100644
index 000000000000..286d47bf6964
--- /dev/null
+++ b/drivers/platform/mips/ls2k-reset.c
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021, Qing Zhang <zhangqing@loongson.cn>
+ * Loongson-2K1000 reset support
+ */
+
+#include <linux/of_address.h>
+#include <linux/pm.h>
+#include <asm/reboot.h>
+
+#define PM1_STS 0x0c /* Power Management1 Status Register */
+#define PM1_CNT 0x14 /* Power Management 1 Control Register */
+#define RST_CNT 0x30 /* Reset Control Register */
+
+static void __iomem *base;
+
+static void ls2k_restart(char *command)
+{
+ writel(0x1, (void *)base + RST_CNT);
+}
+
+static void ls2k_poweroff(void)
+{
+ /* Clear */
+ writel((readl((void *)base + PM1_STS) & 0xffffffff), (void *)base + PM1_STS);
+ /* Sleep Enable | Soft Off*/
+ writel(GENMASK(12, 10)|BIT(13), (void *)base + PM1_CNT);
+}
+
+static int ls2k_reset_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "loongson,ls2k-pm");
+ if (!np) {
+ pr_info("Failed to get PM node\n");
+ return -ENODEV;
+ }
+
+ base = of_iomap(np, 0);
+ if (!base) {
+ pr_info("Failed to map PM register base address\n");
+ return -ENOMEM;
+ }
+
+ _machine_restart = ls2k_restart;
+ pm_power_off = ls2k_poweroff;
+
+ of_node_put(np);
+ return 0;
+}
+
+arch_initcall(ls2k_reset_init);
--
2.31.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH v6 2/2] MIPS: Loongson64: DTS: Add pm block node for Loongson-2K1000
2021-06-30 6:51 [PATCH v6 1/2] MIPS: Loongson64: Add Loongson-2K1000 reset platform driver Qing Zhang
@ 2021-06-30 6:51 ` Qing Zhang
2021-06-30 8:20 ` Jiaxun Yang
0 siblings, 1 reply; 4+ messages in thread
From: Qing Zhang @ 2021-06-30 6:51 UTC (permalink / raw)
To: Thomas Bogendoerfer, Rob Herring, Jiaxun Yang
Cc: devicetree, linux-mips, linux-kernel
The module is now supported, enable it.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
---
arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
index 569e814def83..8f469b623740 100644
--- a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
+++ b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
@@ -52,6 +52,11 @@ package0: bus@10000000 {
0 0x40000000 0 0x40000000 0 0x40000000
0xfe 0x00000000 0xfe 0x00000000 0 0x40000000>;
+ pm: power-controller@1fe07000 {
+ compatible = "loongson,ls2k-pm";
+ reg = <0 0x1fe07000 0 0x422>;
+ };
+
liointc0: interrupt-controller@1fe11400 {
compatible = "loongson,liointc-2.0";
reg = <0 0x1fe11400 0 0x40>,
--
2.31.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v6 2/2] MIPS: Loongson64: DTS: Add pm block node for Loongson-2K1000
2021-06-30 6:51 ` [PATCH v6 2/2] MIPS: Loongson64: DTS: Add pm block node for Loongson-2K1000 Qing Zhang
@ 2021-06-30 8:20 ` Jiaxun Yang
2021-06-30 12:34 ` zhangqing
0 siblings, 1 reply; 4+ messages in thread
From: Jiaxun Yang @ 2021-06-30 8:20 UTC (permalink / raw)
To: Qing Zhang, Thomas Bogendoerfer, Rob Herring
Cc: devicetree, linux-mips, linux-kernel
在 2021/6/30 14:51, Qing Zhang 写道:
> The module is now supported, enable it.
Oh, you forgot binding document.
Thanks.
- Jiaxun
>
> Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
> ---
> arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
> index 569e814def83..8f469b623740 100644
> --- a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
> +++ b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
> @@ -52,6 +52,11 @@ package0: bus@10000000 {
> 0 0x40000000 0 0x40000000 0 0x40000000
> 0xfe 0x00000000 0xfe 0x00000000 0 0x40000000>;
>
> + pm: power-controller@1fe07000 {
> + compatible = "loongson,ls2k-pm";
> + reg = <0 0x1fe07000 0 0x422>;
> + };
> +
> liointc0: interrupt-controller@1fe11400 {
> compatible = "loongson,liointc-2.0";
> reg = <0 0x1fe11400 0 0x40>,
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v6 2/2] MIPS: Loongson64: DTS: Add pm block node for Loongson-2K1000
2021-06-30 8:20 ` Jiaxun Yang
@ 2021-06-30 12:34 ` zhangqing
0 siblings, 0 replies; 4+ messages in thread
From: zhangqing @ 2021-06-30 12:34 UTC (permalink / raw)
To: Jiaxun Yang, Thomas Bogendoerfer, Rob Herring
Cc: devicetree, linux-mips, linux-kernel
On 06/30/2021 04:20 PM, Jiaxun Yang wrote:
>
> 在 2021/6/30 14:51, Qing Zhang 写道:
>> The module is now supported, enable it.
>
> Oh, you forgot binding document.
oh, I forgot a patch... :
I'll send it make RESEND.
Thanks,
-Qing
>
> Thanks.
>
> - Jiaxun
>
>>
>> Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
>> ---
>> arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi | 5 +++++
>> 1 file changed, 5 insertions(+)
>>
>> diff --git a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
>> b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
>> index 569e814def83..8f469b623740 100644
>> --- a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
>> +++ b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
>> @@ -52,6 +52,11 @@ package0: bus@10000000 {
>> 0 0x40000000 0 0x40000000 0 0x40000000
>> 0xfe 0x00000000 0xfe 0x00000000 0 0x40000000>;
>> + pm: power-controller@1fe07000 {
>> + compatible = "loongson,ls2k-pm";
>> + reg = <0 0x1fe07000 0 0x422>;
>> + };
>> +
>> liointc0: interrupt-controller@1fe11400 {
>> compatible = "loongson,liointc-2.0";
>> reg = <0 0x1fe11400 0 0x40>,
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-06-30 12:35 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2021-06-30 6:51 [PATCH v6 1/2] MIPS: Loongson64: Add Loongson-2K1000 reset platform driver Qing Zhang
2021-06-30 6:51 ` [PATCH v6 2/2] MIPS: Loongson64: DTS: Add pm block node for Loongson-2K1000 Qing Zhang
2021-06-30 8:20 ` Jiaxun Yang
2021-06-30 12:34 ` zhangqing
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