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67 lines
1.7 KiB
Diff
67 lines
1.7 KiB
Diff
1 year ago
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From 5252a0a75c390e01fc9b402660c1a28f7f4d172f Mon Sep 17 00:00:00 2001
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From: vauban353 <vauban353@gmail.com>
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Date: Sun, 6 Aug 2023 11:13:27 +0100
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Subject: [PATCH] MMC SPI: Hack to support non DMA capable SPI ctrl.
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---
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drivers/mmc/host/mmc_spi.c | 6 +++++-
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drivers/spi/internals.h | 3 +++
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drivers/spi/spi.c | 3 +++
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3 files changed, 11 insertions(+), 1 deletion(-)
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diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
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index cc333ad67cac..fb45c7fa431d 100644
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--- a/drivers/mmc/host/mmc_spi.c
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+++ b/drivers/mmc/host/mmc_spi.c
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@@ -29,6 +29,9 @@
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#include <asm/unaligned.h>
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+//<CJ>:
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+#undef CONFIG_HAS_DMA
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+//#define DEBUG 1
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/* NOTES:
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*
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@@ -1375,7 +1378,8 @@ static int mmc_spi_probe(struct spi_device *spi)
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* that's the only reason not to use a few MHz for f_min (until
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* the upper layer reads the target frequency from the CSD).
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*/
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- mmc->f_min = 400000;
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+//<CJ> mmc->f_min = 400000;
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+ mmc->f_min = 5000000;
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mmc->f_max = spi->max_speed_hz;
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host = mmc_priv(mmc);
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diff --git a/drivers/spi/internals.h b/drivers/spi/internals.h
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index 4a28a8395552..c49350240978 100644
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--- a/drivers/spi/internals.h
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+++ b/drivers/spi/internals.h
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@@ -12,6 +12,9 @@
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#ifndef __LINUX_SPI_INTERNALS_H
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#define __LINUX_SPI_INTERNALS_H
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+//<CJ>:
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+#undef CONFIG_HAS_DMA
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+
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#include <linux/device.h>
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#include <linux/dma-direction.h>
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#include <linux/scatterlist.h>
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diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
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index a221478e528e..e198049cc80c 100644
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--- a/drivers/spi/spi.c
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+++ b/drivers/spi/spi.c
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@@ -42,6 +42,9 @@ EXPORT_TRACEPOINT_SYMBOL(spi_transfer_stop);
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#include "internals.h"
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+//<CJ>:
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+#undef CONFIG_HAS_DMA
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+
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static DEFINE_IDR(spi_master_idr);
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static void spidev_release(struct device *dev)
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--
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2.25.1
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