diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/0094-mmc-sdhci-acpi-Add-support-for-ACPI-HID-of-AMD-Contr.patch')
-rwxr-xr-x | common/recipes-kernel/linux/linux-yocto-4.14.71/0094-mmc-sdhci-acpi-Add-support-for-ACPI-HID-of-AMD-Contr.patch | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/0094-mmc-sdhci-acpi-Add-support-for-ACPI-HID-of-AMD-Contr.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/0094-mmc-sdhci-acpi-Add-support-for-ACPI-HID-of-AMD-Contr.patch deleted file mode 100755 index 3cd99eaf..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.14.71/0094-mmc-sdhci-acpi-Add-support-for-ACPI-HID-of-AMD-Contr.patch +++ /dev/null @@ -1,125 +0,0 @@ -From 047b0e5412203f56a29d0c450e8e5523f566233e Mon Sep 17 00:00:00 2001 -From: Shah Nehal-Bakulchandra <Nehal-bakulchandra.Shah@amd.com> -Date: Fri, 1 Dec 2017 15:38:52 +0530 -Subject: [PATCH 94/95] mmc: sdhci-acpi: Add support for ACPI HID of AMD - Controller with HS400 - -This patch supports HS400 for AMD upcoming emmc 5.0 controller.The -HS400 and HS200 mode requires hardware work around also. This patch -adds the quirks for the same. - -Signed-off-by: Nehal-bakulchandra Shah <Nehal-bakulchandra.Shah@amd.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-acpi.c | 79 +++++++++++++++++++++++++++++++++++++++++++ - 1 file changed, 79 insertions(+) - -diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c -index 08ae0ff..c2e7048 100644 ---- a/drivers/mmc/host/sdhci-acpi.c -+++ b/drivers/mmc/host/sdhci-acpi.c -@@ -367,6 +367,83 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_qcom_sd = { - .caps = MMC_CAP_NONREMOVABLE, - }; - -+/* AMD sdhci reset dll register. */ -+#define SDHCI_AMD_RESET_DLL_REGISTER 0x908 -+ -+static int amd_select_drive_strength(struct mmc_card *card, -+ unsigned int max_dtr, int host_drv, -+ int card_drv, int *drv_type) -+{ -+ return MMC_SET_DRIVER_TYPE_A; -+} -+ -+static void sdhci_acpi_amd_hs400_dll(struct sdhci_host *host) -+{ -+ /* AMD Platform requires dll setting */ -+ sdhci_writel(host, 0x40003210, SDHCI_AMD_RESET_DLL_REGISTER); -+ usleep_range(10, 20); -+ sdhci_writel(host, 0x40033210, SDHCI_AMD_RESET_DLL_REGISTER); -+} -+ -+/* -+ * For AMD Platform it is required to disable the tuning -+ * bit first controller to bring to HS Mode from HS200 -+ * mode, later enable to tune to HS400 mode. -+ */ -+static void amd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) -+{ -+ struct sdhci_host *host = mmc_priv(mmc); -+ unsigned int old_timing = host->timing; -+ -+ sdhci_set_ios(mmc, ios); -+ if (old_timing == MMC_TIMING_MMC_HS200 && -+ ios->timing == MMC_TIMING_MMC_HS) -+ sdhci_writew(host, 0x9, SDHCI_HOST_CONTROL2); -+ if (old_timing != MMC_TIMING_MMC_HS400 && -+ ios->timing == MMC_TIMING_MMC_HS400) { -+ sdhci_writew(host, 0x80, SDHCI_HOST_CONTROL2); -+ sdhci_acpi_amd_hs400_dll(host); -+ } -+} -+ -+static const struct sdhci_ops sdhci_acpi_ops_amd = { -+ .set_clock = sdhci_set_clock, -+ .set_bus_width = sdhci_set_bus_width, -+ .reset = sdhci_reset, -+ .set_uhs_signaling = sdhci_set_uhs_signaling, -+}; -+ -+static const struct sdhci_acpi_chip sdhci_acpi_chip_amd = { -+ .ops = &sdhci_acpi_ops_amd, -+}; -+ -+static int sdhci_acpi_emmc_amd_probe_slot(struct platform_device *pdev, -+ const char *hid, const char *uid) -+{ -+ struct sdhci_acpi_host *c = platform_get_drvdata(pdev); -+ struct sdhci_host *host = c->host; -+ -+ sdhci_read_caps(host); -+ if (host->caps1 & SDHCI_SUPPORT_DDR50) -+ host->mmc->caps = MMC_CAP_1_8V_DDR; -+ -+ if ((host->caps1 & SDHCI_SUPPORT_SDR104) && -+ (host->mmc->caps & MMC_CAP_1_8V_DDR)) -+ host->mmc->caps2 = MMC_CAP2_HS400_1_8V; -+ -+ host->mmc_host_ops.select_drive_strength = amd_select_drive_strength; -+ host->mmc_host_ops.set_ios = amd_set_ios; -+ return 0; -+} -+ -+static const struct sdhci_acpi_slot sdhci_acpi_slot_amd_emmc = { -+ .chip = &sdhci_acpi_chip_amd, -+ .caps = MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE, -+ .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE | -+ SDHCI_QUIRK_32BIT_ADMA_SIZE, -+ .probe_slot = sdhci_acpi_emmc_amd_probe_slot, -+}; -+ - struct sdhci_acpi_uid_slot { - const char *hid; - const char *uid; -@@ -390,6 +467,7 @@ static const struct sdhci_acpi_uid_slot sdhci_acpi_uids[] = { - { "PNP0D40" }, - { "QCOM8051", NULL, &sdhci_acpi_slot_qcom_sd_3v }, - { "QCOM8052", NULL, &sdhci_acpi_slot_qcom_sd }, -+ { "AMDI0040", NULL, &sdhci_acpi_slot_amd_emmc }, - { }, - }; - -@@ -406,6 +484,7 @@ static const struct acpi_device_id sdhci_acpi_ids[] = { - { "PNP0D40" }, - { "QCOM8051" }, - { "QCOM8052" }, -+ { "AMDI0040" }, - { }, - }; - MODULE_DEVICE_TABLE(acpi, sdhci_acpi_ids); --- -2.7.4 - |