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Wed, 16 Sep 2020 13:55:48 -0700 (PDT) From: Fabio Estevam To: shawnguo@kernel.org Subject: [PATCH 04/13] ARM: imx27: Retrieve the CCM base address from devicetree Date: Wed, 16 Sep 2020 17:55:13 -0300 Message-Id: <20200916205522.8783-5-festevam@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200916205522.8783-1-festevam@gmail.com> References: <20200916205522.8783-1-festevam@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200916_165551_174960_CB8ADDFB X-CRM114-Status: GOOD ( 14.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, Fabio Estevam , arnd@arndb.de, linux-imx@nxp.com, kernel@pengutronix.de MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that imx27 has been converted to a devicetree-only platform, retrieve the CCM base address from devicetree. Signed-off-by: Fabio Estevam --- arch/arm/mach-imx/pm-imx27.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-imx/pm-imx27.c b/arch/arm/mach-imx/pm-imx27.c index d943535566c8..020e6deb67c8 100644 --- a/arch/arm/mach-imx/pm-imx27.c +++ b/arch/arm/mach-imx/pm-imx27.c @@ -7,6 +7,7 @@ * modify it under the terms of the GNU General Public License. */ +#include #include #include #include @@ -15,13 +16,20 @@ static int mx27_suspend_enter(suspend_state_t state) { + void __iomem *ccm_base; + struct device_node *np; u32 cscr; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm"); + ccm_base = of_iomap(np, 0); + BUG_ON(!ccm_base); + switch (state) { case PM_SUSPEND_MEM: /* Clear MPEN and SPEN to disable MPLL/SPLL */ - cscr = imx_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR)); + cscr = imx_readl(ccm_base); cscr &= 0xFFFFFFFC; - imx_writel(cscr, MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR)); + imx_writel(cscr, ccm_base); /* Executes WFI */ cpu_do_idle(); break; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel