* [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+)
@ 2020-08-13 9:06 Wenbin Mei
2020-08-13 9:06 ` [v4,1/3] mmc: dt-bindings: Add resets/reset-names for Mediatek MMC bindings Wenbin Mei
` (4 more replies)
0 siblings, 5 replies; 7+ messages in thread
From: Wenbin Mei @ 2020-08-13 9:06 UTC (permalink / raw)
To: Ulf Hansson, Rob Herring
Cc: Chaotian Jing, Matthias Brugger, Philipp Zabel, linux-mmc,
devicetree, linux-arm-kernel, linux-mediatek, linux-kernel,
srv_heupstream
--
2.18.0
^ permalink raw reply [flat|nested] 7+ messages in thread
* [v4,1/3] mmc: dt-bindings: Add resets/reset-names for Mediatek MMC bindings
2020-08-13 9:06 [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Wenbin Mei
@ 2020-08-13 9:06 ` Wenbin Mei
2020-08-13 9:06 ` [v4,2/3] arm64: dts: mt7622: add reset node for mmc device Wenbin Mei
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Wenbin Mei @ 2020-08-13 9:06 UTC (permalink / raw)
To: Ulf Hansson, Rob Herring
Cc: Chaotian Jing, Matthias Brugger, Philipp Zabel, linux-mmc,
devicetree, linux-arm-kernel, linux-mediatek, linux-kernel,
srv_heupstream, Wenbin Mei, stable
Add description for resets/reset-names.
Cc: <stable@vger.kernel.org> # v5.4+
Fixes: 966580ad236e ("mmc: mediatek: add support for MT7622 SoC")
Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
---
Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
index 8a532f4453f2..09aecec47003 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
@@ -49,6 +49,8 @@ Optional properties:
error caused by stop clock(fifo full)
Valid range = [0:0x7]. if not present, default value is 0.
applied to compatible "mediatek,mt2701-mmc".
+- resets: Phandle and reset specifier pair to softreset line of MSDC IP.
+- reset-names: Should be "hrst".
Examples:
mmc0: mmc@11230000 {
--
2.18.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [v4,2/3] arm64: dts: mt7622: add reset node for mmc device
2020-08-13 9:06 [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Wenbin Mei
2020-08-13 9:06 ` [v4,1/3] mmc: dt-bindings: Add resets/reset-names for Mediatek MMC bindings Wenbin Mei
@ 2020-08-13 9:06 ` Wenbin Mei
2020-08-13 9:06 ` [v4,3/3] mmc: mediatek: add optional module reset property Wenbin Mei
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: Wenbin Mei @ 2020-08-13 9:06 UTC (permalink / raw)
To: Ulf Hansson, Rob Herring
Cc: Chaotian Jing, Matthias Brugger, Philipp Zabel, linux-mmc,
devicetree, linux-arm-kernel, linux-mediatek, linux-kernel,
srv_heupstream, Wenbin Mei, stable
This commit adds reset node for mmc device.
Cc: <stable@vger.kernel.org> # v5.4+
Fixes: 966580ad236e ("mmc: mediatek: add support for MT7622 SoC")
Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
---
arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
index 1a39e0ef776b..5b9ec032ce8d 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
@@ -686,6 +686,8 @@
clocks = <&pericfg CLK_PERI_MSDC30_0_PD>,
<&topckgen CLK_TOP_MSDC50_0_SEL>;
clock-names = "source", "hclk";
+ resets = <&pericfg MT7622_PERI_MSDC0_SW_RST>;
+ reset-names = "hrst";
status = "disabled";
};
--
2.18.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* [v4,3/3] mmc: mediatek: add optional module reset property
2020-08-13 9:06 [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Wenbin Mei
2020-08-13 9:06 ` [v4,1/3] mmc: dt-bindings: Add resets/reset-names for Mediatek MMC bindings Wenbin Mei
2020-08-13 9:06 ` [v4,2/3] arm64: dts: mt7622: add reset node for mmc device Wenbin Mei
@ 2020-08-13 9:06 ` Wenbin Mei
2020-08-13 9:27 ` Aw: [v4, 0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.d Frank Wunderlich
2020-08-13 13:54 ` [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Matthias Brugger
4 siblings, 0 replies; 7+ messages in thread
From: Wenbin Mei @ 2020-08-13 9:06 UTC (permalink / raw)
To: Ulf Hansson, Rob Herring
Cc: Chaotian Jing, Matthias Brugger, Philipp Zabel, linux-mmc,
devicetree, linux-arm-kernel, linux-mediatek, linux-kernel,
srv_heupstream, Wenbin Mei, stable
This patch fixs eMMC-Access on mt7622/Bpi-64.
Before we got these Errors on mounting eMMC ion R64:
[ 48.664925] blk_update_request: I/O error, dev mmcblk0, sector 204800 op 0x1:(WRITE)
flags 0x800 phys_seg 1 prio class 0
[ 48.676019] Buffer I/O error on dev mmcblk0p1, logical block 0, lost sync page write
This patch adds a optional reset management for msdc.
Sometimes the bootloader does not bring msdc register
to default state, so need reset the msdc controller.
Cc: <stable@vger.kernel.org> # v5.4+
Fixes: 966580ad236e ("mmc: mediatek: add support for MT7622 SoC")
Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
---
drivers/mmc/host/mtk-sd.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 39e7fc54c438..fc97d5bf3a20 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -22,6 +22,7 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
+#include <linux/reset.h>
#include <linux/mmc/card.h>
#include <linux/mmc/core.h>
@@ -434,6 +435,7 @@ struct msdc_host {
struct msdc_save_para save_para; /* used when gate HCLK */
struct msdc_tune_para def_tune_para; /* default tune setting */
struct msdc_tune_para saved_tune_para; /* tune result of CMD21/CMD19 */
+ struct reset_control *reset;
};
static const struct mtk_mmc_compatible mt8135_compat = {
@@ -1516,6 +1518,12 @@ static void msdc_init_hw(struct msdc_host *host)
u32 val;
u32 tune_reg = host->dev_comp->pad_tune_reg;
+ if (host->reset) {
+ reset_control_assert(host->reset);
+ usleep_range(10, 50);
+ reset_control_deassert(host->reset);
+ }
+
/* Configure to MMC/SD mode, clock free running */
sdr_set_bits(host->base + MSDC_CFG, MSDC_CFG_MODE | MSDC_CFG_CKPDN);
@@ -2273,6 +2281,11 @@ static int msdc_drv_probe(struct platform_device *pdev)
if (IS_ERR(host->src_clk_cg))
host->src_clk_cg = NULL;
+ host->reset = devm_reset_control_get_optional_exclusive(&pdev->dev,
+ "hrst");
+ if (IS_ERR(host->reset))
+ return PTR_ERR(host->reset);
+
host->irq = platform_get_irq(pdev, 0);
if (host->irq < 0) {
ret = -EINVAL;
--
2.18.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Aw: [v4, 0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.d
2020-08-13 9:06 [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Wenbin Mei
` (2 preceding siblings ...)
2020-08-13 9:06 ` [v4,3/3] mmc: mediatek: add optional module reset property Wenbin Mei
@ 2020-08-13 9:27 ` Frank Wunderlich
2020-08-13 13:54 ` [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Matthias Brugger
4 siblings, 0 replies; 7+ messages in thread
From: Frank Wunderlich @ 2020-08-13 9:27 UTC (permalink / raw)
To: Wenbin Mei
Cc: Ulf Hansson, Rob Herring, devicetree, srv_heupstream, linux-mmc,
linux-kernel, linux-mediatek, linux-arm-kernel, Philipp Zabel,
Matthias Brugger, Chaotian Jing
Hi,
it looks like you still miss a blank line between subject and your text in cover-letter
regards Frank
> Betreff: [v4, 0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+)
>
> --
> 2.18.0
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+)
2020-08-13 9:06 [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Wenbin Mei
` (3 preceding siblings ...)
2020-08-13 9:27 ` Aw: [v4, 0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.d Frank Wunderlich
@ 2020-08-13 13:54 ` Matthias Brugger
2020-08-14 1:06 ` Wenbin Mei
4 siblings, 1 reply; 7+ messages in thread
From: Matthias Brugger @ 2020-08-13 13:54 UTC (permalink / raw)
To: Wenbin Mei, Ulf Hansson, Rob Herring
Cc: Chaotian Jing, Philipp Zabel, linux-mmc, devicetree,
linux-arm-kernel, linux-mediatek, linux-kernel, srv_heupstream
It would be good to provide a list of the changes, so that one can easily
understand what's the difference between v3 and v4. On a quick glimpse I didn't
see any changes.
Regards,
Matthias
On 13/08/2020 11:06, Wenbin Mei wrote:
> --
> 2.18.0
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+)
2020-08-13 13:54 ` [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Matthias Brugger
@ 2020-08-14 1:06 ` Wenbin Mei
0 siblings, 0 replies; 7+ messages in thread
From: Wenbin Mei @ 2020-08-14 1:06 UTC (permalink / raw)
To: Matthias Brugger
Cc: Ulf Hansson, Rob Herring, Chaotian Jing, Philipp Zabel,
linux-mmc, devicetree, linux-arm-kernel, linux-mediatek,
linux-kernel, srv_heupstream
Sorry for the inconvenience, there is no changes between V3 and V4, V3
is wrong with my subject line, and V4 fix it.
On Thu, 2020-08-13 at 15:54 +0200, Matthias Brugger wrote:
> It would be good to provide a list of the changes, so that one can easily
> understand what's the difference between v3 and v4. On a quick glimpse I didn't
> see any changes.
>
> Regards,
> Matthias
>
> On 13/08/2020 11:06, Wenbin Mei wrote:
> > --
> > 2.18.0
> >
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2020-08-14 1:07 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2020-08-13 9:06 [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Wenbin Mei
2020-08-13 9:06 ` [v4,1/3] mmc: dt-bindings: Add resets/reset-names for Mediatek MMC bindings Wenbin Mei
2020-08-13 9:06 ` [v4,2/3] arm64: dts: mt7622: add reset node for mmc device Wenbin Mei
2020-08-13 9:06 ` [v4,3/3] mmc: mediatek: add optional module reset property Wenbin Mei
2020-08-13 9:27 ` Aw: [v4, 0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.d Frank Wunderlich
2020-08-13 13:54 ` [v4,0/3] mmc: mediatek: add optional reset property mmc: mediatek: add optional module reset property arm64: dts: mt7622: add reset node for mmc device Documentation/devicetree/bindings/mmc/mtk-sd.txt | 2 ++ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++ drivers/mmc/host/mtk-sd.c | 13 +++++++++++++ 3 files changed, 17 insertions(+) Matthias Brugger
2020-08-14 1:06 ` Wenbin Mei
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