linux-kernel - [PATCH 2/4] mmc: mmci: increase stm32 sdmmcv2 clock max freq

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Date:   Wed, 15 Dec 2021 15:17:25 +0100
From:   Yann Gautier <yann.gautier@...s.st.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Russell King <linux@...linux.org.uk>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Vladimir Zapolskiy <vz@...ia.com>,
        <u.kleine-koenig@...gutronix.de>, Marek Vasut <marex@...x.de>,
        Christophe Kerello <christophe.kerello@...s.st.com>,
        Ludovic Barre <ludovic.barre@...s.st.com>,
        <linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     Yann Gautier <yann.gautier@...s.st.com>
Subject: [PATCH 2/4] mmc: mmci: increase stm32 sdmmcv2 clock max freq

The variant->f_max is dependent on the IP, not on the SoC where it is
embedded. Set the max frequency of its source clock to 267MHz.
The frequency used will be limited by the IOs max frequency, set in the
SoC device tree.

Signed-off-by: Yann Gautier <yann.gautier@...s.st.com>
---
 drivers/mmc/host/mmci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index c0478dfa61b9..45b8608c935c 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -280,7 +280,7 @@ static struct variant_data variant_stm32_sdmmc = {
 static struct variant_data variant_stm32_sdmmcv2 = {
 	.fifosize		= 16 * 4,
 	.fifohalfsize		= 8 * 4,
-	.f_max			= 208000000,
+	.f_max			= 267000000,
 	.stm32_clkdiv		= true,
 	.cmdreg_cpsm_enable	= MCI_CPSM_STM32_ENABLE,
 	.cmdreg_lrsp_crc	= MCI_CPSM_STM32_LRSP_CRC,
-- 
2.17.1