From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH 1/4] arm: omap2+: add missing HWMOD_NO_IDLEST in 81xx hwmod data Date: Fri, 13 Nov 2015 06:41:59 -0800 Message-ID: <20151113144158.GA2517@atomide.com> References: <5628A9F2.3010801@baylibre.com> <20151024012112.GA3078@atomide.com> <56449F15.10508@baylibre.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <56449F15.10508@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org To: Neil Armstrong Cc: Paul Walmsley , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Brian Hutchinson , Frode Isaksen List-Id: linux-omap@vger.kernel.org * Neil Armstrong [151112 06:16]: > On 10/24/2015 12:09 PM, Neil Armstrong wrote: > > Hi, > > > > 2015-10-24 3:21 GMT+02:00 Tony Lindgren : > >> > >> Hi, > >> > >> * Neil Armstrong [151022 02:19]: > >>> Add missing HWMOD_NO_IDLEST hwmod flag for entries no > >>> having omap4 clkctrl values. > >> > >> Have you checked this is the case both in dm814x and dm816x TRM? > >> Also the documentation may not be complete FYI, might be also > >> worth checking the legacy TI kernel tree to be sure. > >> > >> Regards, > >> > >> Tony > >> > >>> Cc: Brian Hutchinson > >>> Signed-off-by: Neil Armstrong > >>> --- > >>> arch/arm/mach-omap2/omap_hwmod_81xx_data.c | 3 +++ > >>> 1 file changed, 3 insertions(+) > >>> > >>> diff --git a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c > >>> index b1288f5..6256052 100644 > >>> --- a/arch/arm/mach-omap2/omap_hwmod_81xx_data.c > >>> +++ b/arch/arm/mach-omap2/omap_hwmod_81xx_data.c > >>> @@ -144,6 +144,7 @@ static struct omap_hwmod dm81xx_l4_ls_hwmod = { > >>> .name = "l4_ls", > >>> .clkdm_name = "alwon_l3s_clkdm", > >>> .class = &l4_hwmod_class, > >>> + .flags = HWMOD_NO_IDLEST, > >>> }; > > In DM814x TRM, the CM_ALWON_L3_SLOW_CLKSTCTRL does not have IDLEST field. > > Same in DM816x TRM. > > > >>> > >>> /* > >>> @@ -155,6 +156,7 @@ static struct omap_hwmod dm81xx_l4_hs_hwmod = { > >>> .name = "l4_hs", > >>> .clkdm_name = "alwon_l3_med_clkdm", > >>> .class = &l4_hwmod_class, > >>> + .flags = HWMOD_NO_IDLEST, > >>> }; > > In DM814x TRM, the CM_ALWON_L3_MED_CLKSTCTRL does not have IDLEST field. > > Same in DM816x TRM. > > > >>> > >>> /* L3 slow -> L4 ls peripheral interface running at 125MHz */ > >>> @@ -850,6 +852,7 @@ static struct omap_hwmod dm816x_emac0_hwmod = { > >>> .name = "emac0", > >>> .clkdm_name = "alwon_ethernet_clkdm", > >>> .class = &dm816x_emac_hwmod_class, > >>> + .flags = HWMOD_NO_IDLEST, > >>> }; > > In this particular case, the IDLEST is handled in the MDIO hwmod. > > > >>> > >>> static struct omap_hwmod_ocp_if dm81xx_l4_hs__emac0 = { > >>> -- > >>> 1.9.1 > > > > I'll check the TI tree to be sure... > > > > Regards, > > Neil > > > Tony, > > In TI's tree, there is no L3_MED hwmod but the L3_SLOW hwmod has NO_IDLEST flag. > > Is there any other issue about this patchset ? Thanks for checking. Well one thing, if this is needed as fix, then a description of what happens without it would be good to have. Regards, Tony