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Wed, 16 Sep 2020 13:55:44 -0700 (PDT) From: Fabio Estevam To: shawnguo@kernel.org Subject: [PATCH 03/13] ARM: imx27: Retrieve the SYSCTRL base address from devicetree Date: Wed, 16 Sep 2020 17:55:12 -0300 Message-Id: <20200916205522.8783-4-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_165546_885157_014EC520 X-CRM114-Status: GOOD ( 15.01 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:841 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider [festevam[at]gmail.com] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org Now that imx27 has been converted to a devicetree-only platform, retrieve the SYSCTRL base address from devicetree. Signed-off-by: Fabio Estevam --- arch/arm/mach-imx/cpu-imx27.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/cpu-imx27.c b/arch/arm/mach-imx/cpu-imx27.c index a969aa71b60f..2c8430f34556 100644 --- a/arch/arm/mach-imx/cpu-imx27.c +++ b/arch/arm/mach-imx/cpu-imx27.c @@ -9,6 +9,7 @@ */ #include +#include #include #include "hardware.h" @@ -20,13 +21,19 @@ static int mx27_cpu_partnumber; static int mx27_read_cpu_rev(void) { + void __iomem *sysctrl_base; + struct device_node *np; u32 val; + + np = of_find_compatible_node(NULL, NULL, "fsl,imx27-sysctrl"); + sysctrl_base = of_iomap(np, 0); + BUG_ON(!sysctrl_base); /* * now we have access to the IO registers. As we need * the silicon revision very early we read it here to * avoid any further hooks */ - val = imx_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR + SYS_CHIP_ID)); + val = imx_readl(sysctrl_base + SYS_CHIP_ID); mx27_cpu_partnumber = (int)((val >> 12) & 0xFFFF);