From 6cb0ac0fb9786d01f140dcfcd3d09ce850dd0a64 Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Mon, 26 Aug 2019 08:47:09 -0700 Subject: [PATCH] ARM: dts: ARM: dts: Configure interconnect target module for am3517sgx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Based on Tony Lindgren's work for omap34xx, this patch applies the same functionality to the AM3517. The following can be tested via sysfs with the following to ensure the SGX module gets enabled and disabled properly: 0x00010201 Bus error Cc: Filip Matijević Cc: "H. Nikolaus Schaller" Cc: Ivaylo Dimitrov Cc: moaz korena Cc: Merlijn Wajer Cc: Paweł Chmiel Cc: Philipp Rossak Cc: Tomi Valkeinen Signed-off-by: Adam Ford [tony@atomide.com: updated subject, dropped rstctrl info] Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am3517.dtsi | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/arch/arm/boot/dts/am3517.dtsi b/arch/arm/boot/dts/am3517.dtsi index 23ea381d363f..bf3002009b00 100644 --- a/arch/arm/boot/dts/am3517.dtsi +++ b/arch/arm/boot/dts/am3517.dtsi @@ -88,6 +88,30 @@ hecc: can@5c050000 { interrupts = <24>; clocks = <&hecc_ck>; }; + + /* + * On am3517 the OCP registers do not seem to be accessible + * similar to the omap34xx. Maybe SGX is permanently set to + * "OCP bypass mode", or maybe there is OCP_SYSCONFIG that is + * write-only at 0x50000e10. We detect SGX based on the SGX + * revision register instead of the unreadable OCP revision + * register. + */ + sgx_module: target-module@50000000 { + compatible = "ti,sysc-omap2", "ti,sysc"; + reg = <0x50000014 0x4>; + reg-names = "rev"; + clocks = <&sgx_fck>, <&sgx_ick>; + clock-names = "fck", "ick"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x50000000 0x4000>; + + /* + * Closed source PowerVR driver, no child device + * binding or driver in mainline + */ + }; }; };