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Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0109-amd-eMMC-sdhci-HS400-workaround-for-ZP.patch')
-rw-r--r--meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0109-amd-eMMC-sdhci-HS400-workaround-for-ZP.patch149
1 files changed, 149 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0109-amd-eMMC-sdhci-HS400-workaround-for-ZP.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0109-amd-eMMC-sdhci-HS400-workaround-for-ZP.patch
new file mode 100644
index 00000000..50b0433b
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0109-amd-eMMC-sdhci-HS400-workaround-for-ZP.patch
@@ -0,0 +1,149 @@
+From c3dcaa45a3f29d943e18bc6470a80b827ac7a115 Mon Sep 17 00:00:00 2001
+From: Sudheesh Mavila <sudheesh.mavila@amd.com>
+Date: Tue, 22 Jan 2019 23:01:45 +0530
+Subject: [PATCH 109/131] amd-eMMC sdhci HS400 workaround for ZP
+
+Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
+---
+ drivers/mmc/core/mmc.c | 12 ++++++++++--
+ drivers/mmc/host/sdhci-acpi.c | 1 +
+ drivers/mmc/host/sdhci.c | 9 +++++++++
+ drivers/mmc/host/sdhci.h | 1 +
+ include/linux/mmc/host.h | 1 +
+ 5 files changed, 22 insertions(+), 2 deletions(-)
+ mode change 100644 => 100755 drivers/mmc/core/mmc.c
+ mode change 100644 => 100755 drivers/mmc/host/sdhci-acpi.c
+ mode change 100644 => 100755 drivers/mmc/host/sdhci.c
+ mode change 100644 => 100755 include/linux/mmc/host.h
+
+diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
+old mode 100644
+new mode 100755
+index 16b22d7..2313e58
+--- a/drivers/mmc/core/mmc.c
++++ b/drivers/mmc/core/mmc.c
+@@ -1161,7 +1161,9 @@ static int mmc_select_hs400(struct mmc_card *card)
+ mmc_hostname(host), err);
+ return err;
+ }
++ /*In AMD Platform due to hardware ip issue this fails*/
+
++ if (!host->ops->set_hs400_dll) {
+ /* Set host controller to HS timing */
+ mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
+
+@@ -1172,7 +1174,7 @@ static int mmc_select_hs400(struct mmc_card *card)
+ /* Reduce frequency to HS frequency */
+ max_dtr = card->ext_csd.hs_max_dtr;
+ mmc_set_clock(host, max_dtr);
+-
++ }
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
+@@ -1212,6 +1214,8 @@ static int mmc_select_hs400(struct mmc_card *card)
+ if (host->ops->hs400_complete)
+ host->ops->hs400_complete(host);
+
++ if (host->ops->set_hs400_dll)
++ host->ops->set_hs400_dll(host);
+ return 0;
+
+ out_err:
+@@ -1234,6 +1238,7 @@ int mmc_hs400_to_hs200(struct mmc_card *card)
+
+ /* Reduce frequency to HS */
+ max_dtr = card->ext_csd.hs_max_dtr;
++ if (!host->ops->set_hs400_dll)
+ mmc_set_clock(host, max_dtr);
+
+ /* Switch HS400 to HS DDR */
+@@ -1243,12 +1248,15 @@ int mmc_hs400_to_hs200(struct mmc_card *card)
+ true, false, true);
+ if (err)
+ goto out_err;
+-
++ /*In AMD Platform due to hardware ip issue this fails*/
++ if (!host->ops->set_hs400_dll)
++ {
+ mmc_set_timing(host, MMC_TIMING_MMC_DDR52);
+
+ err = mmc_switch_status(card);
+ if (err)
+ goto out_err;
++ }
+
+ /* Switch HS DDR to HS */
+ err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
+diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
+old mode 100644
+new mode 100755
+index c2e7048..558b792
+--- a/drivers/mmc/host/sdhci-acpi.c
++++ b/drivers/mmc/host/sdhci-acpi.c
+@@ -411,6 +411,7 @@ static const struct sdhci_ops sdhci_acpi_ops_amd = {
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
++ .set_hs400_dll = sdhci_acpi_amd_hs400_dll,
+ };
+
+ static const struct sdhci_acpi_chip sdhci_acpi_chip_amd = {
+diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
+old mode 100644
+new mode 100755
+index dc5d75f..34c6a81
+--- a/drivers/mmc/host/sdhci.c
++++ b/drivers/mmc/host/sdhci.c
+@@ -1977,6 +1977,14 @@ static void sdhci_hw_reset(struct mmc_host *mmc)
+ host->ops->hw_reset(host);
+ }
+
++static void sdhci_set_hs400_dll(struct mmc_host *mmc)
++{
++ struct sdhci_host *host = mmc_priv(mmc);
++
++ if (host->ops && host->ops->set_hs400_dll)
++ host->ops->set_hs400_dll(host);
++}
++
+ static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
+ {
+ if (!(host->flags & SDHCI_DEVICE_DEAD)) {
+@@ -2465,6 +2473,7 @@ static const struct mmc_host_ops sdhci_ops = {
+ .get_cd = sdhci_get_cd,
+ .get_ro = sdhci_get_ro,
+ .hw_reset = sdhci_hw_reset,
++ .set_hs400_dll = sdhci_set_hs400_dll,
+ .enable_sdio_irq = sdhci_enable_sdio_irq,
+ .start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
+ .prepare_hs400_tuning = sdhci_prepare_hs400_tuning,
+diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
+index 23ddc46..492401d 100755
+--- a/drivers/mmc/host/sdhci.h
++++ b/drivers/mmc/host/sdhci.h
+@@ -611,6 +611,7 @@ struct sdhci_ops {
+ int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode);
+ void (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
+ void (*hw_reset)(struct sdhci_host *host);
++ void (*set_hs400_dll)(struct sdhci_host *host);
+ void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
+ void (*card_event)(struct sdhci_host *host);
+ void (*voltage_switch)(struct sdhci_host *host);
+diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
+old mode 100644
+new mode 100755
+index 843c38f..ba4af38
+--- a/include/linux/mmc/host.h
++++ b/include/linux/mmc/host.h
+@@ -159,6 +159,7 @@ struct mmc_host_ops {
+ unsigned int max_dtr, int host_drv,
+ int card_drv, int *drv_type);
+ void (*hw_reset)(struct mmc_host *host);
++ void (*set_hs400_dll)(struct mmc_host *host);
+ void (*card_event)(struct mmc_host *host);
+
+ /*
+--
+2.7.4
+