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From: Fabio Estevam <festevam@gmail.com>
To: shawnguo@kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
	Fabio Estevam <festevam@gmail.com>,
	arnd@arndb.de, linux-imx@nxp.com, kernel@pengutronix.de
Subject: [PATCH v2 02/11] ARM: imx27: Retrieve the CCM base address from devicetree
Date: Wed, 16 Sep 2020 21:41:16 -0300	[thread overview]
Message-ID: <20200917004125.18487-3-festevam@gmail.com> (raw)
In-Reply-To: <20200917004125.18487-1-festevam@gmail.com>

Now that imx27 has been converted to a devicetree-only platform,
retrieve the CCM base address from devicetree.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Chamges since v1:
- None

 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 <linux/of_address.h>
 #include <linux/kernel.h>
 #include <linux/suspend.h>
 #include <linux/io.h>
@@ -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


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  parent reply	other threads:[~2020-09-17  0:43 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-17  0:41 [PATCH v2 00/11] ARM: imx: Further cleanups due to dt-only conversion Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 01/11] ARM: imx27: Retrieve the SYSCTRL base address from devicetree Fabio Estevam
2020-09-17  0:41 ` Fabio Estevam [this message]
2020-09-17  0:41 ` [PATCH v2 03/11] ARM: imx31: Retrieve the IIM " Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 04/11] ARM: imx3: Retrieve the CCM " Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 05/11] ARM: imx3: Retrieve the AVIC " Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 06/11] ARM: imx35: Retrieve the IIM " Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 07/11] ARM: imx: Remove unused definitions Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 08/11] clk: imx: imx27: Remove mx27_clocks_init() Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 09/11] clk: imx: imx31: Remove mx31_clocks_init() Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 10/11] clk: imx: imx35: Remove mx35_clocks_init() Fabio Estevam
2020-09-17  0:41 ` [PATCH v2 11/11] clk: imx: imx21: Remove clock driver Fabio Estevam
2020-09-17  8:12 ` [PATCH v2 00/11] ARM: imx: Further cleanups due to dt-only conversion Arnd Bergmann
2020-09-22  6:09 ` Shawn Guo

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