From: Diwakar Sharma <diwakar.sharma@in.bosch.com>
Date: Tue, 10 Apr 2018 12:30:32 +0530
Subject: mmc: core: sdio: Set SDIO clock of SDR104 to 150MHz for Marvell 8887
chip
Git-commit: 8ccd66f258cd79420102f3735b3bc8d974a22088
Patch-mainline: v4.18-rc1
References: fate#326470
This patch uses limit clock rate quirk to reduce clock rate
for "SDR104" mode on IMX side for Marvell 8887
WiFi + Bluetooth chip side, as Marvell does not recommend
to use SDIO at the speed of higher than 150MHz.
Signed-off-by: Diwakar Sharma <diwakar.sharma@in.bosch.com>
Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/mmc/core/quirks.h | 3 +++
include/linux/mmc/sdio_ids.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index 5153577754f0..dd2f73af8f2c 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -132,6 +132,9 @@ static const struct mmc_fixup sdio_fixup_methods[] = {
SDIO_FIXUP(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797_F0,
add_quirk, MMC_QUIRK_BROKEN_IRQ_POLLING),
+ SDIO_FIXUP(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887WLAN,
+ add_limit_rate_quirk, 150000000),
+
END_FIXUP
};
diff --git a/include/linux/mmc/sdio_ids.h b/include/linux/mmc/sdio_ids.h
index cdd66a5fbd5e..2836a96e014a 100644
--- a/include/linux/mmc/sdio_ids.h
+++ b/include/linux/mmc/sdio_ids.h
@@ -55,6 +55,7 @@
#define SDIO_DEVICE_ID_MARVELL_8688WLAN 0x9104
#define SDIO_DEVICE_ID_MARVELL_8688BT 0x9105
#define SDIO_DEVICE_ID_MARVELL_8797_F0 0x9128
+#define SDIO_DEVICE_ID_MARVELL_8887WLAN 0x9134
#define SDIO_VENDOR_ID_SIANO 0x039a
#define SDIO_DEVICE_ID_SIANO_NOVA_B0 0x0201
--
2.11.0