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From: Manish Narani <manish.narani@xilinx.com>
To: michal.simek@xilinx.com, adrian.hunter@intel.com,
	ulf.hansson@linaro.org, jolly.shah@xilinx.com,
	rajan.vaja@xilinx.com, nava.manne@xilinx.com,
	manish.narani@xilinx.com, tejas.patel@xilinx.com
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org
Subject: [PATCH 2/4] firmware: xilinx: Add DLL reset support
Date: Tue, 21 Jan 2020 15:51:33 +0530
Message-ID: <1579602095-30060-3-git-send-email-manish.narani@xilinx.com> (raw)
In-Reply-To: <1579602095-30060-1-git-send-email-manish.narani@xilinx.com>

SD DLL resets are required for some of the operations on ZynqMP platform.
Add DLL reset support in ZynqMP firmware driver for SD DLL reset.

Signed-off-by: Manish Narani <manish.narani@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 1 +
 include/linux/firmware/xlnx-zynqmp.h | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 89eb198cee5e..165ec0f1e10a 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -469,6 +469,7 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id)
 static inline int zynqmp_is_valid_ioctl(u32 ioctl_id)
 {
 	switch (ioctl_id) {
+	case IOCTL_SD_DLL_RESET:
 	case IOCTL_SET_SD_TAPDELAY:
 	case IOCTL_SET_PLL_FRAC_MODE:
 	case IOCTL_GET_PLL_FRAC_MODE:
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index e41ad9e37136..01a6d972b8a8 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -92,7 +92,8 @@ enum pm_ret_status {
 };
 
 enum pm_ioctl_id {
-	IOCTL_SET_SD_TAPDELAY = 7,
+	IOCTL_SD_DLL_RESET = 6,
+	IOCTL_SET_SD_TAPDELAY,
 	IOCTL_SET_PLL_FRAC_MODE,
 	IOCTL_GET_PLL_FRAC_MODE,
 	IOCTL_SET_PLL_FRAC_DATA,
@@ -262,6 +263,12 @@ enum tap_delay_type {
 	PM_TAPDELAY_OUTPUT,
 };
 
+enum dll_reset_type {
+	PM_DLL_RESET_ASSERT,
+	PM_DLL_RESET_RELEASE,
+	PM_DLL_RESET_PULSE,
+};
+
 /**
  * struct zynqmp_pm_query_data - PM query data
  * @qid:	query ID
-- 
2.17.1


  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-21 10:21 [PATCH 0/4] Enhancements and Bug Fixes in ZynqMP SDHCI Manish Narani
2020-01-21 10:21 ` [PATCH 1/4] firmware: xilinx: Add ZynqMP Tap Delay setup ioctl to the valid list Manish Narani
2020-02-04 11:39   ` Michal Simek
2020-01-21 10:21 ` Manish Narani [this message]
2020-02-04 11:39   ` [PATCH 2/4] firmware: xilinx: Add DLL reset support Michal Simek
2020-01-21 10:21 ` [PATCH 3/4] mmc: sdhci-of-arasan: Add support for DLL reset for ZynqMP platforms Manish Narani
2020-02-03 11:31   ` Adrian Hunter
2020-01-21 10:21 ` [PATCH 4/4] sdhci: arasan: Remove quirk for broken base clock Manish Narani
2020-02-03 11:31   ` Adrian Hunter
2020-02-04 11:42     ` Michal Simek
2020-02-04 12:29       ` Ulf Hansson
2020-02-04 12:31         ` Michal Simek
2020-02-03  7:20 ` [PATCH 0/4] Enhancements and Bug Fixes in ZynqMP SDHCI Manish Narani
2020-02-13 13:56 ` Ulf Hansson
2020-02-14  6:39   ` Manish Narani

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