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46 lines
1.4 KiB
Diff
46 lines
1.4 KiB
Diff
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From ff2217b2d7f964250dbb9feae94caec8adf3d124 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Thu, 11 May 2023 16:23:13 +0100
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Subject: [PATCH] bcm2835-sdhost: Use DT to configure logging
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Retrieve the system timer base address directly from DT.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/mmc/host/bcm2835-sdhost.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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--- a/drivers/mmc/host/bcm2835-sdhost.c
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+++ b/drivers/mmc/host/bcm2835-sdhost.c
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@@ -242,15 +242,19 @@ static void __iomem *timer_base;
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#define LOG_ENTRIES (256*1)
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#define LOG_SIZE (sizeof(LOG_ENTRY_T)*LOG_ENTRIES)
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-static void log_init(struct device *dev, u32 bus_to_phys)
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+static void log_init(struct device *dev)
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{
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+ struct device_node *np;
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+
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spin_lock_init(&log_lock);
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sdhost_log_buf = dma_alloc_coherent(dev, LOG_SIZE, &sdhost_log_addr,
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GFP_KERNEL);
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if (sdhost_log_buf) {
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+ np = of_find_compatible_node(NULL, NULL,
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+ "brcm,bcm2835-system-timer");
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pr_info("sdhost: log_buf @ %p (%llx)\n",
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sdhost_log_buf, (u64)sdhost_log_addr);
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- timer_base = ioremap(bus_to_phys + 0x7e003000, SZ_4K);
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+ timer_base = of_iomap(np, 0);
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if (!timer_base)
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pr_err("sdhost: failed to remap timer\n");
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}
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@@ -2123,7 +2127,7 @@ static int bcm2835_sdhost_probe(struct p
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(unsigned long)host->max_clk,
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(int)host->irq);
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- log_init(dev, iomem->start - host->bus_addr);
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+ log_init(dev);
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if (node)
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mmc_of_parse(mmc);
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