Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757502AbbLAXkQ (ORCPT ); Tue, 1 Dec 2015 18:40:16 -0500 Received: from muru.com ([72.249.23.125]:49920 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757311AbbLAXi5 (ORCPT ); Tue, 1 Dec 2015 18:38:57 -0500 From: Tony Lindgren To: linux-kernel@vger.kernel.org Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Brian Hutchinson , Delio Brignoli , Neil Armstrong , Matthijs van Duin , Philipp Rosenberger Subject: [PATCH 08/10] ARM: dts: Fix some mux and divider clocks to get dm814x-evm booting Date: Tue, 1 Dec 2015 15:38:21 -0800 Message-Id: <1449013103-23238-9-git-send-email-tony@atomide.com> X-Mailer: git-send-email 2.6.2 In-Reply-To: <1449013103-23238-1-git-send-email-tony@atomide.com> References: <1449013103-23238-1-git-send-email-tony@atomide.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4790 Lines: 178 Although we have hp t410 booting, I noticed that dm814x-evm does not boot after I got one. This is because we don't have the clocks yet configured properly. Let's start configuring proper clocks starting with the system timers and clocks that work with existing mux and divider clock drivers. Note that the oscillator speed register is different from am335x, dm814x has only one bit that shows the BTMODE[6] at CONTROL_STATUS[21]. Also note that this only gets the system timers working with the defined clocks. The PLL clocks are still missing and and the devices may or may not work depending on what the bootloader has enabled. Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/dm814x-clocks.dtsi | 109 +++++++++++++++++++++++++---------- 1 file changed, 79 insertions(+), 30 deletions(-) diff --git a/arch/arm/boot/dts/dm814x-clocks.dtsi b/arch/arm/boot/dts/dm814x-clocks.dtsi index ef1e8e7..2600158 100644 --- a/arch/arm/boot/dts/dm814x-clocks.dtsi +++ b/arch/arm/boot/dts/dm814x-clocks.dtsi @@ -4,25 +4,74 @@ * published by the Free Software Foundation. */ +&pllss_clocks { + timer1_fck: timer1_fck { + #clock-cells = <0>; + compatible = "ti,mux-clock"; + clocks = <&sysclk18_ck &aud_clkin0_ck &aud_clkin1_ck + &aud_clkin2_ck &devosc_ck &auxosc_ck &tclkin_ck>; + ti,bit-shift = <3>; + reg = <0x2e0>; + }; + + timer2_fck: timer2_fck { + #clock-cells = <0>; + compatible = "ti,mux-clock"; + clocks = <&sysclk18_ck &aud_clkin0_ck &aud_clkin1_ck + &aud_clkin2_ck &devosc_ck &auxosc_ck &tclkin_ck>; + ti,bit-shift = <6>; + reg = <0x2e0>; + }; + + sysclk18_ck: sysclk18_ck { + #clock-cells = <0>; + compatible = "ti,mux-clock"; + clocks = <&rtcosc_ck>, <&rtcdivider_ck>; + ti,bit-shift = <0>; + reg = <0x02f0>; + }; +}; + &scm_clocks { + devosc_ck: devosc_ck { + #clock-cells = <0>; + compatible = "ti,mux-clock"; + clocks = <&virt_20000000_ck>, <&virt_19200000_ck>; + ti,bit-shift = <21>; + reg = <0x0040>; + }; - tclkin_ck: tclkin_ck { + /* Optional auxosc, 20 - 30 MHz range, assume 27 MHz by default */ + auxosc_ck: auxosc_ck { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <27000000>; + }; + + /* Optional 32768Hz crystal or clock on RTCOSC pins */ + rtcosc_ck: rtcosc_ck { #clock-cells = <0>; compatible = "fixed-clock"; clock-frequency = <32768>; }; - devosc_ck: devosc_ck { + /* Optional external clock on TCLKIN pin, set rate in baord dts file */ + tclkin_ck: tclkin_ck { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <0>; + }; + + virt_20000000_ck: virt_20000000_ck { #clock-cells = <0>; compatible = "fixed-clock"; clock-frequency = <20000000>; }; - /* Optional auxosc, 20 - 30 MHz range, assume 27 MHz by default */ - auxosc_ck: auxosc_ck { + virt_19200000_ck: virt_19200000_ck { #clock-cells = <0>; compatible = "fixed-clock"; - clock-frequency = <27000000>; + clock-frequency = <19200000>; }; mpu_ck: mpu_ck { @@ -49,12 +98,6 @@ clock-frequency = <48000000>; }; - sysclk18_ck: sysclk18_ck { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <32768>; - }; - cpsw_125mhz_gclk: cpsw_125mhz_gclk { #clock-cells = <0>; compatible = "fixed-clock"; @@ -69,7 +112,31 @@ }; -&pllss_clocks { +&prcm_clocks { + osc_src_ck: osc_src_ck { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clocks = <&devosc_ck>; + clock-mult = <1>; + clock-div = <1>; + }; + + mpu_clksrc_ck: mpu_clksrc_ck { + #clock-cells = <0>; + compatible = "ti,mux-clock"; + clocks = <&devosc_ck>, <&rtcdivider_ck>; + ti,bit-shift = <0>; + reg = <0x0040>; + }; + + /* Fixed divider clock 0.0016384 * devosc */ + rtcdivider_ck: rtcdivider_ck { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clocks = <&devosc_ck>; + clock-mult = <128>; + clock-div = <78125>; + }; aud_clkin0_ck: aud_clkin0_ck { #clock-cells = <0>; @@ -88,22 +155,4 @@ compatible = "fixed-clock"; clock-frequency = <20000000>; }; - - timer1_mux_ck: timer1_mux_ck { - #clock-cells = <0>; - compatible = "ti,mux-clock"; - clocks = <&sysclk18_ck &aud_clkin0_ck &aud_clkin1_ck - &aud_clkin2_ck &devosc_ck &auxosc_ck &tclkin_ck>; - ti,bit-shift = <3>; - reg = <0x2e0>; - }; - - timer2_mux_ck: timer2_mux_ck { - #clock-cells = <0>; - compatible = "ti,mux-clock"; - clocks = <&sysclk18_ck &aud_clkin0_ck &aud_clkin1_ck - &aud_clkin2_ck &devosc_ck &auxosc_ck &tclkin_ck>; - ti,bit-shift = <6>; - reg = <0x2e0>; - }; }; -- 2.6.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/