From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932516AbcISRTq (ORCPT ); Mon, 19 Sep 2016 13:19:46 -0400 Received: from dougal.metanate.com ([90.155.101.14]:15240 "EHLO metanate.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752829AbcISRSH (ORCPT ); Mon, 19 Sep 2016 13:18:07 -0400 From: John Keeping To: Mark Yao Cc: Heiko Stuebner , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, John Keeping Subject: [PATCH 17/27] drm/rockchip: dw-mipi-dsi: ensure PHY is reset Date: Mon, 19 Sep 2016 18:17:31 +0100 Message-Id: <20160919171747.28512-22-john@metanate.com> X-Mailer: git-send-email 2.10.0.278.g4f427b1.dirty In-Reply-To: <20160919171747.28512-1-john@metanate.com> References: <20160919171747.28512-1-john@metanate.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Also don't power up the DSI host at this point since this is not necessary in order to configure the PHY and we do so later when selecting video or command mode. Signed-off-by: John Keeping --- drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c index e621b66b9617..e310c3d81bb8 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -398,7 +398,10 @@ static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi) return testdin; } - dsi_write(dsi, DSI_PWR_UP, POWERUP); + /* Start by clearing PHY state */ + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLR); + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR); dw_mipi_dsi_phy_write(dsi, 0x10, BYPASS_VCO_RANGE | VCO_RANGE_CON_SEL(vco) | -- 2.10.0.278.g4f427b1.dirty