diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/5759-mmc-sdhci-add-tuning-error-codes.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/5759-mmc-sdhci-add-tuning-error-codes.patch | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/5759-mmc-sdhci-add-tuning-error-codes.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/5759-mmc-sdhci-add-tuning-error-codes.patch new file mode 100644 index 00000000..898d0c2d --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/5759-mmc-sdhci-add-tuning-error-codes.patch @@ -0,0 +1,78 @@ +From a506f9c83131d69c3a1ccfb3684f128ddb379111 Mon Sep 17 00:00:00 2001 +From: Yinbo Zhu <yinbo.zhu@nxp.com> +Date: Thu, 23 Aug 2018 16:48:31 +0800 +Subject: [PATCH 5759/5765] mmc: sdhci: add tuning error codes + +This patch is to add tuning error codes to +judge tuning state + +Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com> +Acked-by: Adrian Hunter <adrian.hunter@intel.com> +Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> +Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> +--- + drivers/mmc/host/sdhci.c | 9 +++++---- + drivers/mmc/host/sdhci.h | 1 + + 2 files changed, 6 insertions(+), 4 deletions(-) + +diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c +index 7e29a39d5873..21dff5c7d96d 100644 +--- a/drivers/mmc/host/sdhci.c ++++ b/drivers/mmc/host/sdhci.c +@@ -2261,7 +2261,7 @@ void sdhci_send_tuning(struct sdhci_host *host, u32 opcode) + } + EXPORT_SYMBOL_GPL(sdhci_send_tuning); + +-static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode) ++static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode) + { + int i; + +@@ -2278,13 +2278,13 @@ static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode) + pr_info("%s: Tuning timeout, falling back to fixed sampling clock\n", + mmc_hostname(host->mmc)); + sdhci_abort_tuning(host, opcode); +- return; ++ return -ETIMEDOUT; + } + + ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); + if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) { + if (ctrl & SDHCI_CTRL_TUNED_CLK) +- return; /* Success! */ ++ return 0; /* Success! */ + break; + } + +@@ -2296,6 +2296,7 @@ static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode) + pr_info("%s: Tuning failed, falling back to fixed sampling clock\n", + mmc_hostname(host->mmc)); + sdhci_reset_tuning(host); ++ return -EAGAIN; + } + + int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) +@@ -2357,7 +2358,7 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) + + sdhci_start_tuning(host); + +- __sdhci_execute_tuning(host, opcode); ++ host->tuning_err = __sdhci_execute_tuning(host, opcode); + + sdhci_end_tuning(host); + out: +diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h +index dd3219ebbf22..0a96a0ef017a 100755 +--- a/drivers/mmc/host/sdhci.h ++++ b/drivers/mmc/host/sdhci.h +@@ -564,6 +564,7 @@ struct sdhci_host { + + unsigned int tuning_count; /* Timer count for re-tuning */ + unsigned int tuning_mode; /* Re-tuning mode supported by host */ ++ unsigned int tuning_err; /* Error code for re-tuning */ + #define SDHCI_TUNING_MODE_1 0 + #define SDHCI_TUNING_MODE_2 1 + #define SDHCI_TUNING_MODE_3 2 +-- +2.17.1 + |