add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/arm/mach-imx/pm-imx27.c
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@@ -7,6 +7,7 @@
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  * modify it under the terms of the GNU General Public License.
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  */
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+#include <linux/of_address.h>
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 #include <linux/kernel.h>
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 #include <linux/suspend.h>
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 #include <linux/io.h>
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@@ -15,13 +16,20 @@
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 static int mx27_suspend_enter(suspend_state_t state)
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 {
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+	void __iomem *ccm_base;
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+	struct device_node *np;
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 	u32 cscr;
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+
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+	np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
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+	ccm_base = of_iomap(np, 0);
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+	BUG_ON(!ccm_base);
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+
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 	switch (state) {
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 	case PM_SUSPEND_MEM:
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 		/* Clear MPEN and SPEN to disable MPLL/SPLL */
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-		cscr = imx_readl(MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
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+		cscr = imx_readl(ccm_base);
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 		cscr &= 0xFFFFFFFC;
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-		imx_writel(cscr, MX27_IO_ADDRESS(MX27_CCM_BASE_ADDR));
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+		imx_writel(cscr, ccm_base);
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 		/* Executes WFI */
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 		cpu_do_idle();
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 		break;