From mboxrd@z Thu Jan 1 00:00:00 1970 From: martin@kaiser.cx (Martin Kaiser) Date: Thu, 8 Mar 2018 15:08:51 +0100 Subject: [PATCH] clk: imx25: set correct parents for ssi ipg clocks In-Reply-To: References: <1520373735-13699-1-git-send-email-martin@kaiser.cx> Message-ID: <20180308140851.GA25601@botnar.kaiser.cx> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Fabio, Thus wrote Fabio Estevam (festevam at gmail.com): > I get audio working from SSI1, but I guess this is due to the fact > that the bootloader enables the SSI clock: > I have the following in U-Boot: > /* Enable the clocks */ > DATA 4 0x53f8000c 0x1fffffff > DATA 4 0x53f80010 0xffffffff > DATA 4 0x53f80014 0xfdfff I'm using the same initial settings. Nevertheless, ssi1_ipg_per is disbled after loading the kernel. Digging into this a bit more, it turned out that without my patch, clk_disable_unused() recognizes ssi1_ipg_per as unused and disables it. If my patch is applied and ssi1_ipg_per is declared as parent of ssi1_ipg, clk_disable_unused() will not disable it and fsl_ssi_startup() will enable both ssi1_ipg_per and ssi1_ipg before playing sound. Best regards, Martin