linux-kernel - [PATCH] ARM: dts: ti: am437x-l4: remove autoidle for UART

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241220223523.2125278-1-jm@ti.com>
Date: Fri, 20 Dec 2024 16:35:23 -0600
From: Judith Mendez <jm@...com>
To: Tony Lindgren <tony@...mide.com>, Kevin Hilman <khilman@...com>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, <linux-omap@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Sukrut Bellary
	<sbellary@...libre.com>, Bin Liu <b-liu@...com>
Subject: [PATCH] ARM: dts: ti: am437x-l4: remove autoidle for UART

According to the TRM [0] in 21.5.1.42 UART_SYSC Register,
the autoidle bit should not be set for UART, so remove the
appropriate SYSC_OMAP2_AUTOIDLE flag.

[0] https://www.ti.com/lit/ug/spruhl7i/spruhl7i.pdf
Signed-off-by: Judith Mendez <jm@...com>
---
 arch/arm/boot/dts/ti/omap/am437x-l4.dtsi | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/arch/arm/boot/dts/ti/omap/am437x-l4.dtsi b/arch/arm/boot/dts/ti/omap/am437x-l4.dtsi
index 824b9415ebbe9..fd4634f8c6293 100644
--- a/arch/arm/boot/dts/ti/omap/am437x-l4.dtsi
+++ b/arch/arm/boot/dts/ti/omap/am437x-l4.dtsi
@@ -180,8 +180,7 @@ target-module@...0 {			/* 0x44e09000, ap 16 04.0 */
 			      <0x9058 0x4>;
 			reg-names = "rev", "sysc", "syss";
 			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
-					 SYSC_OMAP2_SOFTRESET |
-					 SYSC_OMAP2_AUTOIDLE)>;
+					 SYSC_OMAP2_SOFTRESET)>;
 			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
 					<SYSC_IDLE_NO>,
 					<SYSC_IDLE_SMART>,
@@ -698,8 +697,7 @@ target-module@...00 {			/* 0x48022000, ap 8 0a.0 */
 			      <0x22058 0x4>;
 			reg-names = "rev", "sysc", "syss";
 			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
-					 SYSC_OMAP2_SOFTRESET |
-					 SYSC_OMAP2_AUTOIDLE)>;
+					 SYSC_OMAP2_SOFTRESET)>;
 			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
 					<SYSC_IDLE_NO>,
 					<SYSC_IDLE_SMART>,
@@ -726,8 +724,7 @@ target-module@...00 {			/* 0x48024000, ap 10 1c.0 */
 			      <0x24058 0x4>;
 			reg-names = "rev", "sysc", "syss";
 			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
-					 SYSC_OMAP2_SOFTRESET |
-					 SYSC_OMAP2_AUTOIDLE)>;
+					 SYSC_OMAP2_SOFTRESET)>;
 			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
 					<SYSC_IDLE_NO>,
 					<SYSC_IDLE_SMART>,
@@ -1385,8 +1382,7 @@ target-module@...00 {			/* 0x481a6000, ap 40 16.0 */
 			      <0xa6058 0x4>;
 			reg-names = "rev", "sysc", "syss";
 			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
-					 SYSC_OMAP2_SOFTRESET |
-					 SYSC_OMAP2_AUTOIDLE)>;
+					 SYSC_OMAP2_SOFTRESET)>;
 			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
 					<SYSC_IDLE_NO>,
 					<SYSC_IDLE_SMART>,
@@ -1413,8 +1409,7 @@ target-module@...00 {			/* 0x481a8000, ap 42 20.0 */
 			      <0xa8058 0x4>;
 			reg-names = "rev", "sysc", "syss";
 			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
-					 SYSC_OMAP2_SOFTRESET |
-					 SYSC_OMAP2_AUTOIDLE)>;
+					 SYSC_OMAP2_SOFTRESET)>;
 			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
 					<SYSC_IDLE_NO>,
 					<SYSC_IDLE_SMART>,
@@ -1441,8 +1436,7 @@ target-module@...00 {			/* 0x481aa000, ap 44 12.0 */
 			      <0xaa058 0x4>;
 			reg-names = "rev", "sysc", "syss";
 			ti,sysc-mask = <(SYSC_OMAP2_ENAWAKEUP |
-					 SYSC_OMAP2_SOFTRESET |
-					 SYSC_OMAP2_AUTOIDLE)>;
+					 SYSC_OMAP2_SOFTRESET)>;
 			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
 					<SYSC_IDLE_NO>,
 					<SYSC_IDLE_SMART>,
-- 
2.47.1