[Letux-kernel] [PATCH v6 8/8] [RFC] MIPS: DTS: Ingenic: adjust register size to available registers

H. Nikolaus Schaller hns at goldelico.com
Wed Nov 10 20:43:33 CET 2021


After getting the regmap size from the device tree we should
reduce the ranges to the really available registers. This
allows to read only existing registers from the debug fs
and makes the regmap check out-of-bounds access.

For the jz4780 we have done this already.

Suggested-for: Paul Cercueil <paul at crapouillou.net>
Signed-off-by: H. Nikolaus Schaller <hns at goldelico.com>
---
 arch/mips/boot/dts/ingenic/jz4725b.dtsi | 2 +-
 arch/mips/boot/dts/ingenic/jz4740.dtsi  | 2 +-
 arch/mips/boot/dts/ingenic/jz4770.dtsi  | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/jz4725b.dtsi b/arch/mips/boot/dts/ingenic/jz4725b.dtsi
index a1f0b71c92237..7f6cbde43f89e 100644
--- a/arch/mips/boot/dts/ingenic/jz4725b.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4725b.dtsi
@@ -321,7 +321,7 @@ udc: usb at 13040000 {
 
 	lcd: lcd-controller at 13050000 {
 		compatible = "ingenic,jz4725b-lcd";
-		reg = <0x13050000 0x1000>;
+		reg = <0x13050000 0x130>; /* tbc */
 
 		interrupt-parent = <&intc>;
 		interrupts = <31>;
diff --git a/arch/mips/boot/dts/ingenic/jz4740.dtsi b/arch/mips/boot/dts/ingenic/jz4740.dtsi
index c1afdfdaa8a38..0126e4cf19507 100644
--- a/arch/mips/boot/dts/ingenic/jz4740.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4740.dtsi
@@ -323,7 +323,7 @@ udc: usb at 13040000 {
 
 	lcd: lcd-controller at 13050000 {
 		compatible = "ingenic,jz4740-lcd";
-		reg = <0x13050000 0x1000>;
+		reg = <0x13050000 0x60>; /* LCDCMD1+4 */
 
 		interrupt-parent = <&intc>;
 		interrupts = <30>;
diff --git a/arch/mips/boot/dts/ingenic/jz4770.dtsi b/arch/mips/boot/dts/ingenic/jz4770.dtsi
index 05c00b93088e9..4f85abab68d50 100644
--- a/arch/mips/boot/dts/ingenic/jz4770.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4770.dtsi
@@ -399,7 +399,7 @@ gpu: gpu at 13040000 {
 
 	lcd: lcd-controller at 13050000 {
 		compatible = "ingenic,jz4770-lcd";
-		reg = <0x13050000 0x300>;
+		reg = <0x13050000 0x130>; /* tbc */
 
 		interrupt-parent = <&intc>;
 		interrupts = <31>;
-- 
2.33.0



More information about the Letux-kernel mailing list