From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rui Miguel Silva Subject: [PATCH v3 04/14] clk: imx7d: reset parent for mipi csi root Date: Mon, 7 May 2018 17:21:42 +0100 Message-ID: <20180507162152.2545-5-rui.silva@linaro.org> References: <20180507162152.2545-1-rui.silva@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180507162152.2545-1-rui.silva@linaro.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: mchehab@kernel.org, sakari.ailus@linux.intel.com, Steve Longerbeam , Philipp Zabel , Rob Herring Cc: devel@driverdev.osuosl.org, devicetree@vger.kernel.org, Greg Kroah-Hartman , Ryan Harkin , Rui Miguel Silva , Fabio Estevam , Shawn Guo , linux-clk@vger.kernel.org, linux-media@vger.kernel.org List-Id: devicetree@vger.kernel.org To guarantee that we do not get Overflow in image FIFO the outer bandwidth has to be faster than inputer bandwidth. For that it must be possible to set a faster frequency clock. So set new parent to sys_pfd3 clock for the mipi csi block. Cc: linux-clk@vger.kernel.org Acked-by: Shawn Guo Signed-off-by: Rui Miguel Silva --- drivers/clk/imx/clk-imx7d.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/imx/clk-imx7d.c b/drivers/clk/imx/clk-imx7d.c index f7f4db2e6fa6..27877d05faa2 100644 --- a/drivers/clk/imx/clk-imx7d.c +++ b/drivers/clk/imx/clk-imx7d.c @@ -891,6 +891,8 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node) clk_set_parent(clks[IMX7D_PLL_AUDIO_MAIN_BYPASS], clks[IMX7D_PLL_AUDIO_MAIN]); clk_set_parent(clks[IMX7D_PLL_VIDEO_MAIN_BYPASS], clks[IMX7D_PLL_VIDEO_MAIN]); + clk_set_parent(clks[IMX7D_MIPI_CSI_ROOT_SRC], clks[IMX7D_PLL_SYS_PFD3_CLK]); + /* use old gpt clk setting, gpt1 root clk must be twice as gpt counter freq */ clk_set_parent(clks[IMX7D_GPT1_ROOT_SRC], clks[IMX7D_OSC_24M_CLK]); -- 2.17.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wm0-f67.google.com ([74.125.82.67]:52107 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752376AbeEGQWh (ORCPT ); Mon, 7 May 2018 12:22:37 -0400 Received: by mail-wm0-f67.google.com with SMTP id j4so14373804wme.1 for ; Mon, 07 May 2018 09:22:37 -0700 (PDT) From: Rui Miguel Silva To: mchehab@kernel.org, sakari.ailus@linux.intel.com, Steve Longerbeam , Philipp Zabel , Rob Herring Cc: linux-media@vger.kernel.org, devel@driverdev.osuosl.org, Shawn Guo , Fabio Estevam , devicetree@vger.kernel.org, Greg Kroah-Hartman , Ryan Harkin , Rui Miguel Silva , linux-clk@vger.kernel.org Subject: [PATCH v3 04/14] clk: imx7d: reset parent for mipi csi root Date: Mon, 7 May 2018 17:21:42 +0100 Message-Id: <20180507162152.2545-5-rui.silva@linaro.org> In-Reply-To: <20180507162152.2545-1-rui.silva@linaro.org> References: <20180507162152.2545-1-rui.silva@linaro.org> Sender: linux-media-owner@vger.kernel.org List-ID: To guarantee that we do not get Overflow in image FIFO the outer bandwidth has to be faster than inputer bandwidth. For that it must be possible to set a faster frequency clock. So set new parent to sys_pfd3 clock for the mipi csi block. Cc: linux-clk@vger.kernel.org Acked-by: Shawn Guo Signed-off-by: Rui Miguel Silva --- drivers/clk/imx/clk-imx7d.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/imx/clk-imx7d.c b/drivers/clk/imx/clk-imx7d.c index f7f4db2e6fa6..27877d05faa2 100644 --- a/drivers/clk/imx/clk-imx7d.c +++ b/drivers/clk/imx/clk-imx7d.c @@ -891,6 +891,8 @@ static void __init imx7d_clocks_init(struct device_node *ccm_node) clk_set_parent(clks[IMX7D_PLL_AUDIO_MAIN_BYPASS], clks[IMX7D_PLL_AUDIO_MAIN]); clk_set_parent(clks[IMX7D_PLL_VIDEO_MAIN_BYPASS], clks[IMX7D_PLL_VIDEO_MAIN]); + clk_set_parent(clks[IMX7D_MIPI_CSI_ROOT_SRC], clks[IMX7D_PLL_SYS_PFD3_CLK]); + /* use old gpt clk setting, gpt1 root clk must be twice as gpt counter freq */ clk_set_parent(clks[IMX7D_GPT1_ROOT_SRC], clks[IMX7D_OSC_24M_CLK]); -- 2.17.0