[Letux-kernel] [PATCH v11 8/8] [RFC] MIPS: DTS: Ingenic: adjust register size to available registers

H. Nikolaus Schaller hns at goldelico.com
Thu Dec 2 19:39:53 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 0c6a5a4266f43..e9e48022f6316 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 772542e1f266a..7f76cba03a089 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 dfe74328ae5dc..bda0a3a86ed5f 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



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