From patchwork Tue Nov 10 11:20:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 11893917 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4447F15E6 for ; Tue, 10 Nov 2020 11:21:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A5AC20659 for ; Tue, 10 Nov 2020 11:21:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730740AbgKJLVB (ORCPT ); Tue, 10 Nov 2020 06:21:01 -0500 Received: from muru.com ([72.249.23.125]:47694 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729604AbgKJLVA (ORCPT ); Tue, 10 Nov 2020 06:21:00 -0500 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 637AF80BA; Tue, 10 Nov 2020 11:21:03 +0000 (UTC) From: Tony Lindgren To: linux-omap@vger.kernel.org Cc: Dave Gerlach , Faiz Abbas , Greg Kroah-Hartman , Grygorii Strashko , Keerthy , Nishanth Menon , Peter Ujfalusi , Roger Quadros , Suman Anna , Tero Kristo , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, Michael Turquette , Stephen Boyd , Bjorn Andersson , Philipp Zabel , Santosh Shilimkar , linux-remoteproc@vger.kernel.org Subject: [PATCH 3/9] clk: ti: am33xx: Keep am3 l3 main clock always on for genpd Date: Tue, 10 Nov 2020 13:20:36 +0200 Message-Id: <20201110112042.65489-4-tony@atomide.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201110112042.65489-1-tony@atomide.com> References: <20201110112042.65489-1-tony@atomide.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org In order for suspend and resume to work with genpd on am3, we must keep l3 main clock always on. Otherwise prm_omap driver will shut down the l3 main clock on suspend when simple-pm-bus and GENPD_FLAG_PM_CLK are used. Note that we already keep the l3 main clock always on with the legacy platform code. Later on we may want to start managing the l3 main clock with a dedicated interconnect driver instead of using simple-pm-bus and GENPD_FLAG_PM_CLK. Cc: linux-clk@vger.kernel.org Cc: Michael Turquette Cc: Stephen Boyd Cc: Tero Kristo Signed-off-by: Tony Lindgren Acked-by: Stephen Boyd --- drivers/clk/ti/clk-33xx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/ti/clk-33xx.c b/drivers/clk/ti/clk-33xx.c --- a/drivers/clk/ti/clk-33xx.c +++ b/drivers/clk/ti/clk-33xx.c @@ -266,6 +266,8 @@ static const char *enable_init_clks[] = { "dpll_ddr_m2_ck", "dpll_mpu_m2_ck", "l3_gclk", + /* AM3_L3_L3_MAIN_CLKCTRL, needed during suspend */ + "l3-clkctrl:00bc:0", "l4hs_gclk", "l4fw_gclk", "l4ls_gclk",