linux-kernel - [PATCH v3] ARM: dts: dra7: Fix duplicate USB4 target module node

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Message-ID: <20210526213035.15448-1-g-tammana@ti.com>
Date:   Wed, 26 May 2021 16:30:35 -0500
From:   Gowtham Tammana <g-tammana@...com>
To:     Suman Anna <s-anna@...com>, <tony@...mide.com>,
        <bcousson@...libre.com>
CC:     <robh+dt@...nel.org>, <linux-omap@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Nisanth Menon <nm@...com>, Gowtham Tammana <g-tammana@...com>
Subject: [PATCH v3] ARM: dts: dra7: Fix duplicate USB4 target module node

With [1] USB4 target-module node got defined in dra74x.dtsi file.
However, the earlier definition in [2] was not removed, and this
duplication of the target module is causing boot failure on dra74
variant boards - dra7-evm, beagleboard-x15, beaglebone-ai, dra76-evm,
am574x-idk.

USB4 is only present in DRA74x variants, so keeping the entry in
dra74x.dtsi and removing it from the top level interconnect hierarchy
dra7-l4.dtsi file. This change makes the USB4 target module no longer
visible to AM5718, DRA71x and DRA72x so removing references to it in
their respective dts files.

[1]: commit c7b72abca61ec ("ARM: OMAP2+: Drop legacy platform data for
dra7 dwc3")
[2]: commit 549fce068a311 ("ARM: dts: dra7: Add l4 interconnect
hierarchy and ti-sysc data")

Fixes: c7b72abca61ec ("ARM: OMAP2+: Drop legacy platform data for dra7 dwc3")
Signed-off-by: Gowtham Tammana <g-tammana@...com>
---
v3:
  - fixed error in references to the commits
  - mentioned the boards that failed
v2:
  - https://lore.kernel.org/linux-arm-kernel/20210526172038.17542-1-g-tammana@ti.com/
  - changed reference to commit sha instead of line numbers
  - added Fixes: tag
  - moved the defintion to dra74.dtsi as per Suman and Tony review comments
v1:
  - https://lore.kernel.org/linux-arm-kernel/20210521211851.14674-1-g-tammana@ti.com/

 arch/arm/boot/dts/am5718.dtsi  |  6 +-----
 arch/arm/boot/dts/dra7-l4.dtsi | 22 ----------------------
 arch/arm/boot/dts/dra71x.dtsi  |  4 ----
 arch/arm/boot/dts/dra72x.dtsi  |  4 ----
 arch/arm/boot/dts/dra74x.dtsi  |  2 +-
 5 files changed, 2 insertions(+), 36 deletions(-)

diff --git a/arch/arm/boot/dts/am5718.dtsi b/arch/arm/boot/dts/am5718.dtsi
index ebf4d3cc1cfb..6d7530a48c73 100644
--- a/arch/arm/boot/dts/am5718.dtsi
+++ b/arch/arm/boot/dts/am5718.dtsi
@@ -17,17 +17,13 @@ / {
  * VCP1, VCP2
  * MLB
  * ISS
- * USB3, USB4
+ * USB3
  */
 
 &usb3_tm {
 	status = "disabled";
 };
 
-&usb4_tm {
-	status = "disabled";
-};
-
 &atl_tm {
 	status = "disabled";
 };
diff --git a/arch/arm/boot/dts/dra7-l4.dtsi b/arch/arm/boot/dts/dra7-l4.dtsi
index 149144cdff35..648d23f7f748 100644
--- a/arch/arm/boot/dts/dra7-l4.dtsi
+++ b/arch/arm/boot/dts/dra7-l4.dtsi
@@ -4129,28 +4129,6 @@ usb3: usb@...00 {
 			};
 		};
 
-		usb4_tm: target-module@...000 {		/* 0x48940000, ap 75 3c.0 */
-			compatible = "ti,sysc-omap4", "ti,sysc";
-			reg = <0x140000 0x4>,
-			      <0x140010 0x4>;
-			reg-names = "rev", "sysc";
-			ti,sysc-mask = <SYSC_OMAP4_DMADISABLE>;
-			ti,sysc-midle = <SYSC_IDLE_FORCE>,
-					<SYSC_IDLE_NO>,
-					<SYSC_IDLE_SMART>,
-					<SYSC_IDLE_SMART_WKUP>;
-			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
-					<SYSC_IDLE_NO>,
-					<SYSC_IDLE_SMART>,
-					<SYSC_IDLE_SMART_WKUP>;
-			/* Domains (P, C): l3init_pwrdm, l3init_clkdm */
-			clocks = <&l3init_clkctrl DRA7_L3INIT_USB_OTG_SS4_CLKCTRL 0>;
-			clock-names = "fck";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			ranges = <0x0 0x140000 0x20000>;
-		};
-
 		target-module@...000 {			/* 0x48970000, ap 21 0a.0 */
 			compatible = "ti,sysc-omap4", "ti,sysc";
 			reg = <0x170010 0x4>;
diff --git a/arch/arm/boot/dts/dra71x.dtsi b/arch/arm/boot/dts/dra71x.dtsi
index cad0e4a2bd8d..9c270d8f75d5 100644
--- a/arch/arm/boot/dts/dra71x.dtsi
+++ b/arch/arm/boot/dts/dra71x.dtsi
@@ -11,7 +11,3 @@
 &rtctarget {
 	status = "disabled";
 };
-
-&usb4_tm {
-	status = "disabled";
-};
diff --git a/arch/arm/boot/dts/dra72x.dtsi b/arch/arm/boot/dts/dra72x.dtsi
index d403acc754b6..f3e934ef7d3e 100644
--- a/arch/arm/boot/dts/dra72x.dtsi
+++ b/arch/arm/boot/dts/dra72x.dtsi
@@ -108,7 +108,3 @@ &pcie1_ep {
 &pcie2_rc {
 	compatible = "ti,dra726-pcie-rc", "ti,dra7-pcie";
 };
-
-&usb4_tm {
-	status = "disabled";
-};
diff --git a/arch/arm/boot/dts/dra74x.dtsi b/arch/arm/boot/dts/dra74x.dtsi
index e1850d6c841a..60f2ab8d34d5 100644
--- a/arch/arm/boot/dts/dra74x.dtsi
+++ b/arch/arm/boot/dts/dra74x.dtsi
@@ -49,7 +49,7 @@ dsp2_system: dsp_system@...00000 {
 			reg = <0x41500000 0x100>;
 		};
 
-		target-module@...40000 {
+		usb4_tm: target-module@...40000 {
 			compatible = "ti,sysc-omap4", "ti,sysc";
 			reg = <0x48940000 0x4>,
 			      <0x48940010 0x4>;
-- 
2.31.1