On 07.09.2020 17:24, Kristof Havasi wrote:
> Dear Ciubatariu,
>
> as I am not familiar with the linux development workflow, I am
> contacting you directly as the author of the upstream patch:
> af199a1a9cb02ec0194804bd46c174b6db262075
>
> I noticed that your addition there was applied twice into 5.4 [1]
>
> d9b8206e5323ae3c9b5b4177478a1224108642f7 v5.4.51-45-gd9b8206e5323
> d55dad8b1d893fae0c4e778abf2ace048bcbad86 v5.4.52-13-gd55dad8b1d89
>
> resulting in a non-harmful, but unnecessary double setting of the variable.
>
> /* set the real number of ports */
> dev->ds->num_ports = dev->port_cnt;
>
> /* set the real number of ports */
> dev->ds->num_ports = dev->port_cnt;
>
> return 0;
>
> Could you notify the stable maintainers to apply your patch correctly?
>
> Best regards,
> Kristóf Havasi
>
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drive…
>
Hello,
Kristóf discovered that one patch of mine was applied twice. What is the
best way to address this?
Thank you Kristóf for finding this.
Best regards,
Codrin
The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 8048822bac01936fda2c7b924a52131da81e6198 Mon Sep 17 00:00:00 2001
From: Sowjanya Komatineni <skomatineni(a)nvidia.com>
Date: Thu, 27 Aug 2020 10:21:01 -0700
Subject: [PATCH] sdhci: tegra: Add missing TMCLK for data timeout
commit b5a84ecf025a ("mmc: tegra: Add Tegra210 support")
Tegra210 and later has a separate sdmmc_legacy_tm (TMCLK) used by Tegra
SDMMC hawdware for data timeout to achive better timeout than using
SDCLK and using TMCLK is recommended.
USE_TMCLK_FOR_DATA_TIMEOUT bit in Tegra SDMMC register
SDHCI_TEGRA_VENDOR_SYS_SW_CTRL can be used to choose either TMCLK or
SDCLK for data timeout.
Default USE_TMCLK_FOR_DATA_TIMEOUT bit is set to 1 and TMCLK is used
for data timeout by Tegra SDMMC hardware and having TMCLK not enabled
is not recommended.
So, this patch adds quirk NVQUIRK_HAS_TMCLK for SoC having separate
timeout clock and keeps TMCLK enabled all the time.
Fixes: b5a84ecf025a ("mmc: tegra: Add Tegra210 support")
Cc: stable <stable(a)vger.kernel.org> # 5.4
Tested-by: Jon Hunter <jonathanh(a)nvidia.com>
Reviewed-by: Jon Hunter <jonathanh(a)nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter(a)intel.com>
Signed-off-by: Sowjanya Komatineni <skomatineni(a)nvidia.com>
Link: https://lore.kernel.org/r/1598548861-32373-8-git-send-email-skomatineni@nvi…
Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org>
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 31ed32101055..13fbf70b5fde 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -110,6 +110,12 @@
#define NVQUIRK_DIS_CARD_CLK_CONFIG_TAP BIT(8)
#define NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING BIT(9)
+/*
+ * NVQUIRK_HAS_TMCLK is for SoC's having separate timeout clock for Tegra
+ * SDMMC hardware data timeout.
+ */
+#define NVQUIRK_HAS_TMCLK BIT(10)
+
/* SDMMC CQE Base Address for Tegra Host Ver 4.1 and Higher */
#define SDHCI_TEGRA_CQE_BASE_ADDR 0xF000
@@ -140,6 +146,7 @@ struct sdhci_tegra_autocal_offsets {
struct sdhci_tegra {
const struct sdhci_tegra_soc_data *soc_data;
struct gpio_desc *power_gpio;
+ struct clk *tmclk;
bool ddr_signaling;
bool pad_calib_required;
bool pad_control_available;
@@ -1433,7 +1440,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
- NVQUIRK_ENABLE_SDR104,
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK,
.min_tap_delay = 106,
.max_tap_delay = 185,
};
@@ -1471,6 +1479,7 @@ static const struct sdhci_tegra_soc_data soc_data_tegra186 = {
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK |
NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING,
.min_tap_delay = 84,
.max_tap_delay = 136,
@@ -1483,7 +1492,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra194 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
- NVQUIRK_ENABLE_SDR104,
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK,
.min_tap_delay = 96,
.max_tap_delay = 139,
};
@@ -1611,6 +1621,43 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
goto err_power_req;
}
+ /*
+ * Tegra210 has a separate SDMMC_LEGACY_TM clock used for host
+ * timeout clock and SW can choose TMCLK or SDCLK for hardware
+ * data timeout through the bit USE_TMCLK_FOR_DATA_TIMEOUT of
+ * the register SDHCI_TEGRA_VENDOR_SYS_SW_CTRL.
+ *
+ * USE_TMCLK_FOR_DATA_TIMEOUT bit default is set to 1 and SDMMC uses
+ * 12Mhz TMCLK which is advertised in host capability register.
+ * With TMCLK of 12Mhz provides maximum data timeout period that can
+ * be achieved is 11s better than using SDCLK for data timeout.
+ *
+ * So, TMCLK is set to 12Mhz and kept enabled all the time on SoC's
+ * supporting separate TMCLK.
+ */
+
+ if (soc_data->nvquirks & NVQUIRK_HAS_TMCLK) {
+ clk = devm_clk_get(&pdev->dev, "tmclk");
+ if (IS_ERR(clk)) {
+ rc = PTR_ERR(clk);
+ if (rc == -EPROBE_DEFER)
+ goto err_power_req;
+
+ dev_warn(&pdev->dev, "failed to get tmclk: %d\n", rc);
+ clk = NULL;
+ }
+
+ clk_set_rate(clk, 12000000);
+ rc = clk_prepare_enable(clk);
+ if (rc) {
+ dev_err(&pdev->dev,
+ "failed to enable tmclk: %d\n", rc);
+ goto err_power_req;
+ }
+
+ tegra_host->tmclk = clk;
+ }
+
clk = devm_clk_get(mmc_dev(host->mmc), NULL);
if (IS_ERR(clk)) {
rc = PTR_ERR(clk);
@@ -1654,6 +1701,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
err_rst_get:
clk_disable_unprepare(pltfm_host->clk);
err_clk_get:
+ clk_disable_unprepare(tegra_host->tmclk);
err_power_req:
err_parse_dt:
sdhci_pltfm_free(pdev);
@@ -1671,6 +1719,7 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
reset_control_assert(tegra_host->rst);
usleep_range(2000, 4000);
clk_disable_unprepare(pltfm_host->clk);
+ clk_disable_unprepare(tegra_host->tmclk);
sdhci_pltfm_free(pdev);
The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 8048822bac01936fda2c7b924a52131da81e6198 Mon Sep 17 00:00:00 2001
From: Sowjanya Komatineni <skomatineni(a)nvidia.com>
Date: Thu, 27 Aug 2020 10:21:01 -0700
Subject: [PATCH] sdhci: tegra: Add missing TMCLK for data timeout
commit b5a84ecf025a ("mmc: tegra: Add Tegra210 support")
Tegra210 and later has a separate sdmmc_legacy_tm (TMCLK) used by Tegra
SDMMC hawdware for data timeout to achive better timeout than using
SDCLK and using TMCLK is recommended.
USE_TMCLK_FOR_DATA_TIMEOUT bit in Tegra SDMMC register
SDHCI_TEGRA_VENDOR_SYS_SW_CTRL can be used to choose either TMCLK or
SDCLK for data timeout.
Default USE_TMCLK_FOR_DATA_TIMEOUT bit is set to 1 and TMCLK is used
for data timeout by Tegra SDMMC hardware and having TMCLK not enabled
is not recommended.
So, this patch adds quirk NVQUIRK_HAS_TMCLK for SoC having separate
timeout clock and keeps TMCLK enabled all the time.
Fixes: b5a84ecf025a ("mmc: tegra: Add Tegra210 support")
Cc: stable <stable(a)vger.kernel.org> # 5.4
Tested-by: Jon Hunter <jonathanh(a)nvidia.com>
Reviewed-by: Jon Hunter <jonathanh(a)nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter(a)intel.com>
Signed-off-by: Sowjanya Komatineni <skomatineni(a)nvidia.com>
Link: https://lore.kernel.org/r/1598548861-32373-8-git-send-email-skomatineni@nvi…
Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org>
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 31ed32101055..13fbf70b5fde 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -110,6 +110,12 @@
#define NVQUIRK_DIS_CARD_CLK_CONFIG_TAP BIT(8)
#define NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING BIT(9)
+/*
+ * NVQUIRK_HAS_TMCLK is for SoC's having separate timeout clock for Tegra
+ * SDMMC hardware data timeout.
+ */
+#define NVQUIRK_HAS_TMCLK BIT(10)
+
/* SDMMC CQE Base Address for Tegra Host Ver 4.1 and Higher */
#define SDHCI_TEGRA_CQE_BASE_ADDR 0xF000
@@ -140,6 +146,7 @@ struct sdhci_tegra_autocal_offsets {
struct sdhci_tegra {
const struct sdhci_tegra_soc_data *soc_data;
struct gpio_desc *power_gpio;
+ struct clk *tmclk;
bool ddr_signaling;
bool pad_calib_required;
bool pad_control_available;
@@ -1433,7 +1440,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
- NVQUIRK_ENABLE_SDR104,
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK,
.min_tap_delay = 106,
.max_tap_delay = 185,
};
@@ -1471,6 +1479,7 @@ static const struct sdhci_tegra_soc_data soc_data_tegra186 = {
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK |
NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING,
.min_tap_delay = 84,
.max_tap_delay = 136,
@@ -1483,7 +1492,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra194 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
- NVQUIRK_ENABLE_SDR104,
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK,
.min_tap_delay = 96,
.max_tap_delay = 139,
};
@@ -1611,6 +1621,43 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
goto err_power_req;
}
+ /*
+ * Tegra210 has a separate SDMMC_LEGACY_TM clock used for host
+ * timeout clock and SW can choose TMCLK or SDCLK for hardware
+ * data timeout through the bit USE_TMCLK_FOR_DATA_TIMEOUT of
+ * the register SDHCI_TEGRA_VENDOR_SYS_SW_CTRL.
+ *
+ * USE_TMCLK_FOR_DATA_TIMEOUT bit default is set to 1 and SDMMC uses
+ * 12Mhz TMCLK which is advertised in host capability register.
+ * With TMCLK of 12Mhz provides maximum data timeout period that can
+ * be achieved is 11s better than using SDCLK for data timeout.
+ *
+ * So, TMCLK is set to 12Mhz and kept enabled all the time on SoC's
+ * supporting separate TMCLK.
+ */
+
+ if (soc_data->nvquirks & NVQUIRK_HAS_TMCLK) {
+ clk = devm_clk_get(&pdev->dev, "tmclk");
+ if (IS_ERR(clk)) {
+ rc = PTR_ERR(clk);
+ if (rc == -EPROBE_DEFER)
+ goto err_power_req;
+
+ dev_warn(&pdev->dev, "failed to get tmclk: %d\n", rc);
+ clk = NULL;
+ }
+
+ clk_set_rate(clk, 12000000);
+ rc = clk_prepare_enable(clk);
+ if (rc) {
+ dev_err(&pdev->dev,
+ "failed to enable tmclk: %d\n", rc);
+ goto err_power_req;
+ }
+
+ tegra_host->tmclk = clk;
+ }
+
clk = devm_clk_get(mmc_dev(host->mmc), NULL);
if (IS_ERR(clk)) {
rc = PTR_ERR(clk);
@@ -1654,6 +1701,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
err_rst_get:
clk_disable_unprepare(pltfm_host->clk);
err_clk_get:
+ clk_disable_unprepare(tegra_host->tmclk);
err_power_req:
err_parse_dt:
sdhci_pltfm_free(pdev);
@@ -1671,6 +1719,7 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
reset_control_assert(tegra_host->rst);
usleep_range(2000, 4000);
clk_disable_unprepare(pltfm_host->clk);
+ clk_disable_unprepare(tegra_host->tmclk);
sdhci_pltfm_free(pdev);
The patch below does not apply to the 4.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable(a)vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 8048822bac01936fda2c7b924a52131da81e6198 Mon Sep 17 00:00:00 2001
From: Sowjanya Komatineni <skomatineni(a)nvidia.com>
Date: Thu, 27 Aug 2020 10:21:01 -0700
Subject: [PATCH] sdhci: tegra: Add missing TMCLK for data timeout
commit b5a84ecf025a ("mmc: tegra: Add Tegra210 support")
Tegra210 and later has a separate sdmmc_legacy_tm (TMCLK) used by Tegra
SDMMC hawdware for data timeout to achive better timeout than using
SDCLK and using TMCLK is recommended.
USE_TMCLK_FOR_DATA_TIMEOUT bit in Tegra SDMMC register
SDHCI_TEGRA_VENDOR_SYS_SW_CTRL can be used to choose either TMCLK or
SDCLK for data timeout.
Default USE_TMCLK_FOR_DATA_TIMEOUT bit is set to 1 and TMCLK is used
for data timeout by Tegra SDMMC hardware and having TMCLK not enabled
is not recommended.
So, this patch adds quirk NVQUIRK_HAS_TMCLK for SoC having separate
timeout clock and keeps TMCLK enabled all the time.
Fixes: b5a84ecf025a ("mmc: tegra: Add Tegra210 support")
Cc: stable <stable(a)vger.kernel.org> # 5.4
Tested-by: Jon Hunter <jonathanh(a)nvidia.com>
Reviewed-by: Jon Hunter <jonathanh(a)nvidia.com>
Acked-by: Adrian Hunter <adrian.hunter(a)intel.com>
Signed-off-by: Sowjanya Komatineni <skomatineni(a)nvidia.com>
Link: https://lore.kernel.org/r/1598548861-32373-8-git-send-email-skomatineni@nvi…
Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org>
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 31ed32101055..13fbf70b5fde 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -110,6 +110,12 @@
#define NVQUIRK_DIS_CARD_CLK_CONFIG_TAP BIT(8)
#define NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING BIT(9)
+/*
+ * NVQUIRK_HAS_TMCLK is for SoC's having separate timeout clock for Tegra
+ * SDMMC hardware data timeout.
+ */
+#define NVQUIRK_HAS_TMCLK BIT(10)
+
/* SDMMC CQE Base Address for Tegra Host Ver 4.1 and Higher */
#define SDHCI_TEGRA_CQE_BASE_ADDR 0xF000
@@ -140,6 +146,7 @@ struct sdhci_tegra_autocal_offsets {
struct sdhci_tegra {
const struct sdhci_tegra_soc_data *soc_data;
struct gpio_desc *power_gpio;
+ struct clk *tmclk;
bool ddr_signaling;
bool pad_calib_required;
bool pad_control_available;
@@ -1433,7 +1440,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
- NVQUIRK_ENABLE_SDR104,
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK,
.min_tap_delay = 106,
.max_tap_delay = 185,
};
@@ -1471,6 +1479,7 @@ static const struct sdhci_tegra_soc_data soc_data_tegra186 = {
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK |
NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING,
.min_tap_delay = 84,
.max_tap_delay = 136,
@@ -1483,7 +1492,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra194 = {
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
- NVQUIRK_ENABLE_SDR104,
+ NVQUIRK_ENABLE_SDR104 |
+ NVQUIRK_HAS_TMCLK,
.min_tap_delay = 96,
.max_tap_delay = 139,
};
@@ -1611,6 +1621,43 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
goto err_power_req;
}
+ /*
+ * Tegra210 has a separate SDMMC_LEGACY_TM clock used for host
+ * timeout clock and SW can choose TMCLK or SDCLK for hardware
+ * data timeout through the bit USE_TMCLK_FOR_DATA_TIMEOUT of
+ * the register SDHCI_TEGRA_VENDOR_SYS_SW_CTRL.
+ *
+ * USE_TMCLK_FOR_DATA_TIMEOUT bit default is set to 1 and SDMMC uses
+ * 12Mhz TMCLK which is advertised in host capability register.
+ * With TMCLK of 12Mhz provides maximum data timeout period that can
+ * be achieved is 11s better than using SDCLK for data timeout.
+ *
+ * So, TMCLK is set to 12Mhz and kept enabled all the time on SoC's
+ * supporting separate TMCLK.
+ */
+
+ if (soc_data->nvquirks & NVQUIRK_HAS_TMCLK) {
+ clk = devm_clk_get(&pdev->dev, "tmclk");
+ if (IS_ERR(clk)) {
+ rc = PTR_ERR(clk);
+ if (rc == -EPROBE_DEFER)
+ goto err_power_req;
+
+ dev_warn(&pdev->dev, "failed to get tmclk: %d\n", rc);
+ clk = NULL;
+ }
+
+ clk_set_rate(clk, 12000000);
+ rc = clk_prepare_enable(clk);
+ if (rc) {
+ dev_err(&pdev->dev,
+ "failed to enable tmclk: %d\n", rc);
+ goto err_power_req;
+ }
+
+ tegra_host->tmclk = clk;
+ }
+
clk = devm_clk_get(mmc_dev(host->mmc), NULL);
if (IS_ERR(clk)) {
rc = PTR_ERR(clk);
@@ -1654,6 +1701,7 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
err_rst_get:
clk_disable_unprepare(pltfm_host->clk);
err_clk_get:
+ clk_disable_unprepare(tegra_host->tmclk);
err_power_req:
err_parse_dt:
sdhci_pltfm_free(pdev);
@@ -1671,6 +1719,7 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
reset_control_assert(tegra_host->rst);
usleep_range(2000, 4000);
clk_disable_unprepare(pltfm_host->clk);
+ clk_disable_unprepare(tegra_host->tmclk);
sdhci_pltfm_free(pdev);