[PATCH v7 3/4] ARM: dts: rockchip: add syscon-reboot-mode DT node

Andy Yan
2016-03-30T02:22:08Z

Rockchip platform use a SYSCON mapped register store
the reboot mode magic value for bootloader to use when
system reboot. So add syscon-reboot-mode driver DT node
for rk3xxx/rk3036/rk3288 based platform

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

---

Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3:
- descirbe all reboot mode as property instead of subnode
- add rk3036 support

Changes in v2:
- make this node as a subnode of PMU

Changes in v1:
- correct the maskrom magic number
- use macro defined in rockchip_boot-mode.h for reboot-mode DT node

arch/arm/boot/dts/rk3036.dtsi | 11 ++++++++++-
arch/arm/boot/dts/rk3288.dtsi | 10 ++++++++++
arch/arm/boot/dts/rk3xxx.dtsi | 12 +++++++++++-
include/dt-bindings/soc/rockchip_boot-mode.h | 15 +++++++++++++++
4 files changed, 46 insertions(+), 2 deletions(-)
create mode 100644 include/dt-bindings/soc/rockchip_boot-mode.h

diff --git a/arch/arm/boot/dts/rk3036.dtsi b/arch/arm/boot/dts/rk3036.dtsi
index b9567c1..4011c2e 100644
--- a/arch/arm/boot/dts/rk3036.dtsi
+++ b/arch/arm/boot/dts/rk3036.dtsi
@@ -43,6 +43,7 @@
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/pinctrl/rockchip.h>
#include <dt-bindings/clock/rk3036-cru.h>
+#include <dt-bindings/soc/rockchip_boot-mode.h>
#include "skeleton.dtsi"

/ {
@@ -261,8 +262,16 @@
};

grf: syscon@20008000 {
- compatible = "rockchip,rk3036-grf", "syscon";
+ compatible = "rockchip,rk3036-grf", "syscon", "simple-mfd";
reg = <0x20008000 0x1000>;
+ reboot-mode {
+ compatible = "syscon-reboot-mode";
+ offset = <0x1d8>;
+ mode-normal = <BOOT_NORMAL>;
+ mode-recovery = <BOOT_RECOVERY>;
+ mode-bootloader = <BOOT_FASTBOOT>;
+ mode-loader = <BOOT_BL_DOWNLOAD>;
+ };
};

acodec: acodec-ana@20030000 {
diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 8ac49f3..9aa7d73 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -45,6 +45,7 @@
#include <dt-bindings/clock/rk3288-cru.h>
#include <dt-bindings/thermal/thermal.h>
#include <dt-bindings/power/rk3288-power.h>
+#include <dt-bindings/soc/rockchip_boot-mode.h>
#include "skeleton.dtsi"

/ {
@@ -713,6 +714,15 @@
clocks = <&cru ACLK_GPU>;
};
};
+
+ reboot-mode {
+ compatible = "syscon-reboot-mode";
+ offset = <0x94>;
+ mode-normal = <BOOT_NORMAL>;
+ mode-recovery = <BOOT_RECOVERY>;
+ mode-bootloader = <BOOT_FASTBOOT>;
+ mode-loader = <BOOT_BL_DOWNLOAD>;
+ };
};

sgrf: syscon@ff740000 {
diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
index 99eeea7..f8f661f 100644
--- a/arch/arm/boot/dts/rk3xxx.dtsi
+++ b/arch/arm/boot/dts/rk3xxx.dtsi
@@ -43,6 +43,7 @@

#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/soc/rockchip_boot-mode.h>
#include "skeleton.dtsi"

/ {
@@ -243,8 +244,17 @@
};

pmu: pmu@20004000 {
- compatible = "rockchip,rk3066-pmu", "syscon";
+ compatible = "rockchip,rk3066-pmu", "syscon", "simple-mfd";
reg = <0x20004000 0x100>;
+
+ reboot-mode {
+ compatible = "syscon-reboot-mode";
+ offset = <0x40>;
+ mode-normal = <BOOT_NORMAL>;
+ mode-recovery = <BOOT_RECOVERY>;
+ mode-bootloader = <BOOT_FASTBOOT>;
+ mode-loader = <BOOT_BL_DOWNLOAD>;
+ };
};

grf: grf@20008000 {
diff --git a/include/dt-bindings/soc/rockchip_boot-mode.h b/include/dt-bindings/soc/rockchip_boot-mode.h
new file mode 100644
index 0000000..ae7c867
--- /dev/null
+++ b/include/dt-bindings/soc/rockchip_boot-mode.h
@@ -0,0 +1,15 @@
+#ifndef __ROCKCHIP_BOOT_MODE_H
+#define __ROCKCHIP_BOOT_MODE_H
+
+/*high 24 bits is tag, low 8 bits is type*/
+#define REBOOT_FLAG 0x5242C300
+/* normal boot */
+#define BOOT_NORMAL (REBOOT_FLAG + 0)
+/* enter bootloader rockusb mode */
+#define BOOT_BL_DOWNLOAD (REBOOT_FLAG + 1)
+/* enter recovery */
+#define BOOT_RECOVERY (REBOOT_FLAG + 3)
+ /* enter fastboot mode */
+#define BOOT_FASTBOOT (REBOOT_FLAG + 9)
+
+#endif
--
1.9.1