linux-kernel - [PATCH 4/7] mmc: sdhci: move SDHCI_QUIRK2_CLOCK_DIV_ZERO

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Date:   Thu, 02 Apr 2020 13:54:56 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Michal Simek <michal.simek@...inx.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Kevin Liu <kliu5@...vell.com>,
        Suneel Garapati <suneel.garapati@...inx.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: [PATCH 4/7] mmc: sdhci: move SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN
 frequency limit

Move clock frequency limit for SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN where
it belongs.

Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
 drivers/mmc/host/sdhci-of-arasan.c | 7 ++++---
 drivers/mmc/host/sdhci.c           | 3 +--
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index d4905c106c06..5e3b9131a631 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -339,7 +339,6 @@ static const struct sdhci_pltfm_data sdhci_arasan_pdata = {
 	.ops = &sdhci_arasan_ops,
 	.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
 	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
-			SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN |
 			SDHCI_QUIRK2_STOP_WITH_TC,
 };
 
@@ -410,8 +409,7 @@ static const struct sdhci_ops sdhci_arasan_cqe_ops = {
 static const struct sdhci_pltfm_data sdhci_arasan_cqe_pdata = {
 	.ops = &sdhci_arasan_cqe_ops,
 	.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
-	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
-			SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN,
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 };
 
 static struct sdhci_arasan_of_data sdhci_arasan_rk3399_data = {
@@ -1155,6 +1153,9 @@ static int sdhci_arasan_add_host(struct sdhci_arasan_data *sdhci_arasan)
 	bool dma64;
 	int ret;
 
+	if (sdhci_pltfm_clk_get_max_clock(host) <= 25000000)
+		host->quirks2 |= SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN;
+
 	if (!sdhci_arasan->has_cqe)
 		return sdhci_add_host(host);
 
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index a043bf5e3565..ed88ac4e4cf3 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1809,8 +1809,7 @@ u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
 			/* Version 3.00 divisors must be a multiple of 2. */
 			if (host->max_clk <= clock) {
 				div = 1;
-				if ((host->quirks2 & SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN)
-					&& host->max_clk <= 25000000)
+				if (host->quirks2 & SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN)
 					div = 2;
 			} else {
 				for (div = 2; div < SDHCI_MAX_DIV_SPEC_300;
-- 
2.20.1