From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751187AbdAVJhv (ORCPT ); Sun, 22 Jan 2017 04:37:51 -0500 Received: from regular1.263xmail.com ([211.150.99.136]:50653 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750735AbdAVJhs (ORCPT ); Sun, 22 Jan 2017 04:37:48 -0500 X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-RL-SENDER: zyw@rock-chips.com X-FST-TO: linux-kernel@vger.kernel.org X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: zyw@rock-chips.com X-UNIQUE-TAG: <101e9a4b2234119a9b51bc84658d7e7e> X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 Subject: Re: [PATCH v2 14/26] drm/rockchip: dw-mipi-dsi: fix escape clock rate To: John Keeping , Mark Yao References: <20170121163128.22240-1-john@metanate.com> <20170121163128.22240-15-john@metanate.com> Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org From: Chris Zhong Message-ID: <58847D4E.9020002@rock-chips.com> Date: Sun, 22 Jan 2017 17:37:18 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: <20170121163128.22240-15-john@metanate.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Reviewed-by: Chris Zhong On 01/22/2017 12:31 AM, John Keeping wrote: > Use the same calculation as the vendor kernel to derive the escape clock > speed. > > Signed-off-by: John Keeping > --- > Unchanged in v2 > --- > drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c > index 290282e86d16..c2e0ba96e0a0 100644 > --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c > +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c > @@ -710,11 +710,13 @@ static void dw_mipi_dsi_disable(struct dw_mipi_dsi *dsi) > > static void dw_mipi_dsi_init(struct dw_mipi_dsi *dsi) > { > + u32 esc_clk_division = (dsi->lane_mbps >> 3) / 20 + 1; > + > dsi_write(dsi, DSI_PWR_UP, RESET); > dsi_write(dsi, DSI_PHY_RSTZ, PHY_DISFORCEPLL | PHY_DISABLECLK > | PHY_RSTZ | PHY_SHUTDOWNZ); > dsi_write(dsi, DSI_CLKMGR_CFG, TO_CLK_DIVIDSION(10) | > - TX_ESC_CLK_DIVIDSION(7)); > + TX_ESC_CLK_DIVIDSION(esc_clk_division)); > } > > static void dw_mipi_dsi_dpi_config(struct dw_mipi_dsi *dsi,