Message ID | 20190611145135.21399-70-jagan@amarulasolutions.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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bh=CdKYTAWEPhUXylEOQSNrbOliIo7eTy5laKiwuvhYZ0Q=; b=TrT9vmD3tWTpFvWnQzUtozUx/0P8aTnHlFo7h9DBiL8unjF/eSPXJmob0/38z9gTeA q6KNIvND9U2uyj4Doa/0RpCz3unbBMoP2eatknREOnz3B+/8Sxv/NnKNh0Rqag9a3BvM 9MmbPOdgJESvS+DQwrmyrm5ejtLNM8BAeI//4XK9BudhX15UP48ZPcJll+UpfznTJPVk G7tUX6M+7m3iyhSfaDTQ+iX53eyBqyiny764DmrOyG+jY8uEmOS3tThG934LwL8g2ANy IQCHOGcCS4z/FJtu9PwKOtbdexv7ObD6sJ1jYb5x/N5ZLeLuVBhNNFQo5/iFC8KznvVF qycw== X-Gm-Message-State: APjAAAVqi14r1W9W+Gzcwdp/2P9QYVRWai0kaLl/I5wshmNxrz9Ls8xv J2REB/smYP3WrLdLyYmf2pNC/g== X-Google-Smtp-Source: APXvYqzRJrjN379LJRUnwfPcA3NvSTetibDLEguiFMpwTlskt24XEKbQ2+dNEuXNc3CnXFGhfT0XOw== X-Received: by 2002:a17:90a:a116:: with SMTP id s22mr26976818pjp.51.1560264984603; Tue, 11 Jun 2019 07:56:24 -0700 (PDT) Received: from localhost.localdomain ([115.97.180.18]) by smtp.gmail.com with ESMTPSA id e9sm16206208pfn.154.2019.06.11.07.56.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Jun 2019 07:56:24 -0700 (PDT) From: Jagan Teki <jagan@amarulasolutions.com> To: Simon Glass <sjg@chromium.org>, Philipp Tomsich <philipp.tomsich@theobroma-systems.com>, Kever Yang <kever.yang@rock-chips.com>, YouMin Chen <cym@rock-chips.com>, u-boot@lists.denx.de Subject: [PATCH 69/92] ram: rk3399: Don't disable dfi dram clk for lpddr4, rank 1 Date: Tue, 11 Jun 2019 20:21:12 +0530 Message-Id: <20190611145135.21399-70-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.18.0.321.gffc6fa0e3 In-Reply-To: <20190611145135.21399-1-jagan@amarulasolutions.com> References: <20190611145135.21399-1-jagan@amarulasolutions.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190611_075625_237889_89E38EE9 X-CRM114-Status: GOOD ( 11.46 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms <linux-rockchip.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-rockchip>, <mailto:linux-rockchip-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-rockchip/> List-Post: <mailto:linux-rockchip@lists.infradead.org> List-Help: <mailto:linux-rockchip-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-rockchip>, <mailto:linux-rockchip-request@lists.infradead.org?subject=subscribe> Cc: linux-rockchip@lists.infradead.org, linux-amarula@amarulasolutions.com, Jagan Teki <jagan@amarulasolutions.com>, gajjar04akash@gmail.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" <linux-rockchip-bounces@lists.infradead.org> Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP |
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ram: rk3399: Add LPDDR4 support
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diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c index a251fc6045..9151b023e2 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -1233,8 +1233,18 @@ static void dram_all_config(struct dram_info *dram, writel(noc_timing->ddrmode.d32, &ddr_msch_regs->ddrmode); - /* rank 1 memory clock disable (dfi_dram_clk_disable = 1) */ - if (sdram_params->ch[channel].cap_info.rank == 1) + /** + * rank 1 memory clock disable (dfi_dram_clk_disable = 1) + * + * The hardware for LPDDR4 with + * - CLK0P/N connect to lower 16-bits + * - CLK1P/N connect to higher 16-bits + * + * dfi dram clk is configured via CLK1P/N, so disabling + * dfi dram clk will disable the CLK1P/N as well for lpddr4. + */ + if (sdram_params->ch[channel].cap_info.rank == 1 && + sdram_params->base.dramtype != LPDDR4) setbits_le32(&dram->chan[channel].pctl->denali_ctl[276], 1 << 17); }