diff options
| author | Lee Jones <lee.jones@linaro.org> | 2013-03-25 15:02:38 +0400 |
|---|---|---|
| committer | Andrey Konovalov <andrey.konovalov@linaro.org> | 2013-04-18 20:26:36 +0400 |
| commit | 03d27d8b9fea2b7d16d7358f004064f5daacaf9a (patch) | |
| tree | 0dbb482ebff006e08552d3df31f5836f48903852 | |
| parent | 83ee7103aa12970244255c2c8a7c255290666bbc (diff) | |
mfd: db8500-prcmu: Fetch the PRCMU TCPM base address from Device Treell_20130418.0
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 instead.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 8602bf85b45..a998edc73c9 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -3159,8 +3159,9 @@ static void db8500_prcmu_update_cpufreq(void) */ static int db8500_prcmu_probe(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node; struct prcmu_pdata *pdata = dev_get_platdata(&pdev->dev); + struct device_node *np = pdev->dev.of_node; + struct device_node *tcdm_np; int irq = 0, err = 0, i; struct resource *res; @@ -3169,11 +3170,19 @@ static int db8500_prcmu_probe(struct platform_device *pdev) 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"); - return -ENOENT; - } - tcdm_base = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); + if (np) { + tcdm_np = of_find_node_by_name(np->parent, + "prcmu-tcdm-per4"); + if (!tcdm_np) { + dev_err(&pdev->dev, + "no prcmu tcdm region provided\n"); + return -ENOENT; + } + tcdm_base = of_iomap(tcdm_np, 0); + } + } else + tcdm_base = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); /* Clean up the mailbox interrupts after pre-kernel code. */ writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR); |