From: Qu Wenruo <wqu@suse.com> To: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org Cc: sebastian.reichel@collabora.com Subject: [PATCH] phy: rockchip: remove 24M and 24M clock handling for naneng combphy Date: Fri, 3 Feb 2023 12:07:08 +0800 [thread overview] Message-ID: <550a7ba2ebdbd6ea2a717ee82ba7f0244638c692.1675397136.git.wqu@suse.com> (raw) Although the combphy supports 24M and 25M clocks, they are not utilized at any upstream dts (RK3568) nor downstream vendor kernel (RK3568, RK3588S, RK3588). Another thing is, with those two clocks removed, it's easier to port the rk3588 combphy, as 3588 combphy needs to write into cfg->pipe_clk_24m for 24M clock case. Signed-off-by: Qu Wenruo <wqu@suse.com> --- REASON FOR RFC: I'm not familiar with the arm realm at all, thus I don't know if it's a common practice to support unutilized features. But if it's OK for upstream kernel drivers to support functionality that may never be utilized, please ignore this patch. --- .../phy/rockchip/phy-rockchip-naneng-combphy.c | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c index 7b213825fb5d..ae7083ae17a2 100644 --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c @@ -94,7 +94,6 @@ struct rockchip_combphy_grfcfg { struct combphy_reg pipe_rxterm_set; struct combphy_reg pipe_txelec_set; struct combphy_reg pipe_txcomp_set; - struct combphy_reg pipe_clk_25m; struct combphy_reg pipe_clk_100m; struct combphy_reg pipe_phymode_sel; struct combphy_reg pipe_rate_sel; @@ -454,21 +453,6 @@ static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv) rate = clk_get_rate(priv->refclk); switch (rate) { - case REF_CLOCK_24MHz: - if (priv->type == PHY_TYPE_USB3 || priv->type == PHY_TYPE_SATA) { - /* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */ - val = PHYREG15_SSC_CNT_VALUE << PHYREG15_SSC_CNT_SHIFT; - rockchip_combphy_updatel(priv, PHYREG15_SSC_CNT_MASK, - val, PHYREG15); - - writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16); - } - break; - - case REF_CLOCK_25MHz: - rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_25m, true); - break; - case REF_CLOCK_100MHz: rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_100m, true); if (priv->type == PHY_TYPE_PCIE) { @@ -530,7 +514,6 @@ static const struct rockchip_combphy_grfcfg rk3568_combphy_grfcfgs = { .pipe_rxterm_set = { 0x0000, 12, 12, 0x00, 0x01 }, .pipe_txelec_set = { 0x0004, 1, 1, 0x00, 0x01 }, .pipe_txcomp_set = { 0x0004, 4, 4, 0x00, 0x01 }, - .pipe_clk_25m = { 0x0004, 14, 13, 0x00, 0x01 }, .pipe_clk_100m = { 0x0004, 14, 13, 0x00, 0x02 }, .pipe_phymode_sel = { 0x0008, 1, 1, 0x00, 0x01 }, .pipe_rate_sel = { 0x0008, 2, 2, 0x00, 0x01 }, -- 2.39.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip
WARNING: multiple messages have this Message-ID (diff)
From: Qu Wenruo <wqu@suse.com> To: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org Cc: sebastian.reichel@collabora.com Subject: [PATCH] phy: rockchip: remove 24M and 24M clock handling for naneng combphy Date: Fri, 3 Feb 2023 12:07:08 +0800 [thread overview] Message-ID: <550a7ba2ebdbd6ea2a717ee82ba7f0244638c692.1675397136.git.wqu@suse.com> (raw) Although the combphy supports 24M and 25M clocks, they are not utilized at any upstream dts (RK3568) nor downstream vendor kernel (RK3568, RK3588S, RK3588). Another thing is, with those two clocks removed, it's easier to port the rk3588 combphy, as 3588 combphy needs to write into cfg->pipe_clk_24m for 24M clock case. Signed-off-by: Qu Wenruo <wqu@suse.com> --- REASON FOR RFC: I'm not familiar with the arm realm at all, thus I don't know if it's a common practice to support unutilized features. But if it's OK for upstream kernel drivers to support functionality that may never be utilized, please ignore this patch. --- .../phy/rockchip/phy-rockchip-naneng-combphy.c | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c index 7b213825fb5d..ae7083ae17a2 100644 --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c @@ -94,7 +94,6 @@ struct rockchip_combphy_grfcfg { struct combphy_reg pipe_rxterm_set; struct combphy_reg pipe_txelec_set; struct combphy_reg pipe_txcomp_set; - struct combphy_reg pipe_clk_25m; struct combphy_reg pipe_clk_100m; struct combphy_reg pipe_phymode_sel; struct combphy_reg pipe_rate_sel; @@ -454,21 +453,6 @@ static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv) rate = clk_get_rate(priv->refclk); switch (rate) { - case REF_CLOCK_24MHz: - if (priv->type == PHY_TYPE_USB3 || priv->type == PHY_TYPE_SATA) { - /* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */ - val = PHYREG15_SSC_CNT_VALUE << PHYREG15_SSC_CNT_SHIFT; - rockchip_combphy_updatel(priv, PHYREG15_SSC_CNT_MASK, - val, PHYREG15); - - writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16); - } - break; - - case REF_CLOCK_25MHz: - rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_25m, true); - break; - case REF_CLOCK_100MHz: rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_100m, true); if (priv->type == PHY_TYPE_PCIE) { @@ -530,7 +514,6 @@ static const struct rockchip_combphy_grfcfg rk3568_combphy_grfcfgs = { .pipe_rxterm_set = { 0x0000, 12, 12, 0x00, 0x01 }, .pipe_txelec_set = { 0x0004, 1, 1, 0x00, 0x01 }, .pipe_txcomp_set = { 0x0004, 4, 4, 0x00, 0x01 }, - .pipe_clk_25m = { 0x0004, 14, 13, 0x00, 0x01 }, .pipe_clk_100m = { 0x0004, 14, 13, 0x00, 0x02 }, .pipe_phymode_sel = { 0x0008, 1, 1, 0x00, 0x01 }, .pipe_rate_sel = { 0x0008, 2, 2, 0x00, 0x01 }, -- 2.39.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-02-03 4:07 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-02-03 4:07 Qu Wenruo [this message] 2023-02-03 4:07 ` [PATCH] phy: rockchip: remove 24M and 24M clock handling for naneng combphy Qu Wenruo
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