linux-kernel - [PATCH 08/11] mmc: renesas_sdhi: remove R-Car H3 ES1.* handling

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Message-Id: <20230307163041.3815-9-wsa+renesas@sang-engineering.com>
Date:   Tue,  7 Mar 2023 17:30:36 +0100
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     linux-renesas-soc@...r.kernel.org
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 08/11] mmc: renesas_sdhi: remove R-Car H3 ES1.* handling

R-Car H3 ES1.* was only available to an internal development group and
needed a lot of quirks and workarounds. These become a maintenance
burden now, so our development group decided to remove upstream support
and disable booting for this SoC. Public users only have ES2 onwards.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
Please apply individually per subsystem. There are no dependencies and the SoC
doesn't boot anymore since v6.3-rc1.

 drivers/mmc/host/renesas_sdhi_internal_dmac.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index f38003f6b1ca..9ab813903b2c 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -72,11 +72,10 @@ enum renesas_sdhi_dma_cookie {
 
 static unsigned long global_flags;
 /*
- * Workaround for avoiding to use RX DMAC by multiple channels.
- * On R-Car H3 ES1.* and M3-W ES1.0, when multiple SDHI channels use
- * RX DMAC simultaneously, sometimes hundreds of bytes data are not
- * stored into the system memory even if the DMAC interrupt happened.
- * So, this driver then uses one RX DMAC channel only.
+ * Workaround for avoiding to use RX DMAC by multiple channels. On R-Car M3-W
+ * ES1.0, when multiple SDHI channels use RX DMAC simultaneously, sometimes
+ * hundreds of data bytes are not stored into the system memory even if the
+ * DMAC interrupt happened. So, this driver then uses one RX DMAC channel only.
  */
 #define SDHI_INTERNAL_DMAC_RX_IN_USE	0
 
@@ -222,7 +221,6 @@ static const struct renesas_sdhi_quirks sdhi_quirks_r9a09g011 = {
  */
 static const struct soc_device_attribute sdhi_quirks_match[]  = {
 	{ .soc_id = "r8a774a1", .revision = "ES1.[012]", .data = &sdhi_quirks_4tap_nohs400 },
-	{ .soc_id = "r8a7795", .revision = "ES1.*", .data = &sdhi_quirks_4tap_nohs400_one_rx },
 	{ .soc_id = "r8a7795", .revision = "ES2.0", .data = &sdhi_quirks_4tap },
 	{ .soc_id = "r8a7796", .revision = "ES1.0", .data = &sdhi_quirks_4tap_nohs400_one_rx },
 	{ .soc_id = "r8a7796", .revision = "ES1.[12]", .data = &sdhi_quirks_4tap_nohs400 },
-- 
2.35.1