A recent move to send the base addresses though the PRCMU platform device resource instead of defines found in <mach/*>, means that dbx500 devices can no longer boot successfully when booting with Device Tree enabled. This patch ensures the addresses are obtained correctly from DT.
Signed-off-by: Lee Jones <[email protected]> --- drivers/mfd/db8500-prcmu.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 21f261b..8602bf8 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -17,6 +17,8 @@ #include <linux/err.h> #include <linux/spinlock.h> #include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> #include <linux/slab.h> #include <linux/mutex.h> #include <linux/completion.h> @@ -2790,19 +2792,29 @@ static int db8500_irq_init(struct device_node *np) } static void dbx500_fw_version_init(struct platform_device *pdev, - u32 version_offset) + u32 version_offset, + struct device_node *np) { + struct device_node *tcpm_np; struct resource *res; - void __iomem *tcpm_base; + void __iomem *tcpm_base = NULL; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "prcmu-tcpm"); if (!res) { - dev_err(&pdev->dev, - "Error: no prcmu tcpm memory region provided\n"); - return; - } - tcpm_base = ioremap(res->start, resource_size(res)); + if (np) { + tcpm_np = of_find_node_by_name(np->parent, + "prcmu-tcpm-per4"); + if (!tcpm_np) { + dev_err(&pdev->dev, + "no prcmu tcpm mem region provided\n"); + return; + } + tcpm_base = of_iomap(tcpm_np, 0); + } + } else + tcpm_base = ioremap(res->start, resource_size(res)); + if (tcpm_base != NULL) { u32 version; @@ -3154,7 +3166,7 @@ static int db8500_prcmu_probe(struct platform_device *pdev) init_prcm_registers(); - dbx500_fw_version_init(pdev, pdata->version_offset); + dbx500_fw_version_init(pdev, pdata->version_offset, np); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "prcmu-tcdm"); if (!res) { dev_err(&pdev->dev, "no prcmu tcdm region provided\n"); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
